{"id":2095,"date":"2026-04-21T22:46:06","date_gmt":"2026-04-21T14:46:06","guid":{"rendered":"http:\/\/www.preluna.xyz\/?p=2095"},"modified":"2026-04-21T22:46:07","modified_gmt":"2026-04-21T14:46:07","slug":"numpy-polyval","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2026\/04\/21\/numpy-polyval\/preluna\/text\/","title":{"rendered":"numpy.polyval"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/numpy.polyval.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"610\" height=\"547\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/numpy.polyval.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2096\"  sizes=\"auto, (max-width: 610px) 100vw, 610px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u9898\u76ee\u8003\u70b9<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u4e3b\u8981\u8003\u8fd9\u51e0\u4e2a\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8f93\u5165\u5904\u7406<br>\u7b2c\u4e00\u884c\u8bfb\u5165\u4e00\u7ec4\u591a\u9879\u5f0f\u7cfb\u6570\uff0c\u7b2c\u4e8c\u884c\u8bfb\u5165 x \u7684\u503c\u3002<\/li>\n\n\n\n<li>\u5217\u8868\u4e0e\u6570\u5b57\u7c7b\u578b\u8f6c\u6362<br>\u56e0\u4e3a\u7cfb\u6570\u91cc\u53ef\u80fd\u6709\u5c0f\u6570\uff0c\u6bd4\u5982\u6837\u4f8b\u91cc\u7684 <code>1.1<\/code>\uff0c\u6240\u4ee5\u8981\u7528 <code>float<\/code>\u3002<\/li>\n\n\n\n<li>NumPy \u4e2d\u7684\u591a\u9879\u5f0f\u8ba1\u7b97<br>\u8fd9\u9053\u9898\u7684\u6838\u5fc3\u901a\u5e38\u662f <code>numpy.polyval()<\/code>\u3002<\/li>\n\n\n\n<li>\u5ba1\u9898\u80fd\u529b<br>\u4f60\u8981\u5148\u770b\u660e\u767d\uff1a\u9898\u76ee\u4e0d\u662f\u8ba9\u4f60\u201c\u6c42\u5bfc\u201d\u201c\u5c55\u5f00\u201d\u201c\u8f93\u51fa\u8868\u8fbe\u5f0f\u201d\uff0c\u800c\u662f\u8ba9\u4f60\u201c\u4ee3\u5165 x\uff0c\u6c42\u591a\u9879\u5f0f\u7684\u503c\u201d\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5ba1\u9898<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u5165\u662f\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u7b2c\u4e00\u884c\uff1a\u591a\u9879\u5f0f P \u7684\u7cfb\u6570\uff0c\u7a7a\u683c\u5206\u9694\u3002<br>\u7b2c\u4e8c\u884c\uff1a\u4e00\u4e2a\u6570 x\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u6837\u4f8b\u8f93\u5165\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 2 3\n0\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa\u662f\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u8f93\u51fa\u591a\u9879\u5f0f P \u5728 x \u8fd9\u4e2a\u70b9\u4e0a\u7684\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9053\u9898\u5230\u5e95\u5728\u6c42\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u5982\u679c\u7cfb\u6570\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 2 3\n<\/code><\/pre>\n\n\n\n<p>\u90a3\u5b83\u8868\u793a\u7684\u591a\u9879\u5f0f\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1x^2 + 2x + 3\n<\/code><\/pre>\n\n\n\n<p>\u7136\u540e\u7b2c\u4e8c\u884c\u7ed9\u4e86\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>x = 0\n<\/code><\/pre>\n\n\n\n<p>\u6240\u4ee5\u8981\u7b97\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 * 0^2 + 2 * 0 + 3 = 3.0\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bb9\u6613\u5ffd\u7565\u7684\u70b9<\/h3>\n\n\n\n<p>\u8fd9\u91cc\u6700\u5bb9\u6613\u5ffd\u7565\u7684\u4e00\u70b9\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u7cfb\u6570\u7684\u987a\u5e8f\u662f\u4ece\u9ad8\u6b21\u5230\u4f4e\u6b21\u3002<\/strong><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;1.1, 2, 3]\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1x^2 + 2x + 3\n<\/code><\/pre>\n\n\n\n<p>\u4e0d\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 + 2x + 3x^2\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u987a\u5e8f\u4e00\u5b9a\u4e0d\u80fd\u641e\u53cd\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u601d\u8def\u63d0\u793a<\/h2>\n\n\n\n<p>\u5148\u4e0d\u8981\u6025\u7740\u5199\u4ee3\u7801\uff0c\u5148\u628a\u9898\u76ee\u7ffb\u8bd1\u6210\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u8bfb\u5165\u7b2c\u4e00\u884c\uff0c\u628a\u5b83\u53d8\u6210\u4e00\u4e2a\u201c\u7cfb\u6570\u5217\u8868\u201d\u3002<br>\u7b2c\u4e8c\u6b65\uff0c\u8bfb\u5165\u7b2c\u4e8c\u884c\uff0c\u628a\u5b83\u53d8\u6210\u4e00\u4e2a\u6570\u5b57 x\u3002<br>\u7b2c\u4e09\u6b65\uff0c\u7528 NumPy \u7684 <code>polyval()<\/code> \u628a\u7cfb\u6570\u548c x \u4ee3\u8fdb\u53bb\uff0c\u76f4\u63a5\u5f97\u5230\u7ed3\u679c\u3002<br>\u7b2c\u56db\u6b65\uff0c\u6253\u5370\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5148\u628a\u8fd9\u9053\u9898\u7406\u89e3\u6210\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6211\u5df2\u7ecf\u77e5\u9053\u591a\u9879\u5f0f\u957f\u4ec0\u4e48\u6837\u4e86\uff0c\u73b0\u5728\u53ea\u9700\u8981\u628a x \u586b\u8fdb\u53bb\u7b97\u503c\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b8c\u6574\u8bbe\u8ba1\u601d\u8def<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u6700\u76f4\u63a5\u7684\u505a\u6cd5\u5c31\u662f\u7528 <code>numpy.polyval()<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u8bfb\u53d6\u7cfb\u6570<\/h3>\n\n\n\n<p>\u7b2c\u4e00\u884c\u8f93\u5165\u662f\u4e00\u4e32\u6570\u5b57\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 2 3\n<\/code><\/pre>\n\n\n\n<p>\u6211\u4eec\u8981\u628a\u5b83\u53d8\u6210\u5217\u8868\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;1.1, 2.0, 3.0]\n<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a\u6709\u5c0f\u6570\uff0c\u6240\u4ee5\u8fd9\u91cc\u5e94\u8be5\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>list(map(float, input().split()))\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u8bfb\u53d6 x<\/h3>\n\n\n\n<p>\u7b2c\u4e8c\u884c\u53ea\u6709\u4e00\u4e2a\u503c\uff0c\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>0\n<\/code><\/pre>\n\n\n\n<p>\u628a\u5b83\u8bfb\u6210\u6d6e\u70b9\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>x = float(input())\n<\/code><\/pre>\n\n\n\n<p>\u4e4b\u6240\u4ee5\u4e5f\u53ef\u4ee5\u7528 <code>float<\/code>\uff0c\u662f\u56e0\u4e3a x \u4e0d\u4e00\u5b9a\u603b\u662f\u6574\u6570\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff1a\u8c03\u7528 <code>numpy.polyval(P, x)<\/code><\/h3>\n\n\n\n<p>\u8fd9\u662f\u8fd9\u9053\u9898\u7684\u6838\u5fc3\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval(P, x)\n<\/code><\/pre>\n\n\n\n<p>\u5b83\u7684\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5df2\u77e5\u591a\u9879\u5f0f\u7cfb\u6570\u5217\u8868 P\uff0c\u6c42\u8fd9\u4e2a\u591a\u9879\u5f0f\u5728 x \u5904\u7684\u503c\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>P = &#91;1.1, 2, 3]\nx = 0\n<\/code><\/pre>\n\n\n\n<p>\u5b83\u7b49\u4ef7\u4e8e\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 * 0^2 + 2 * 0 + 3\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u56db\u6b65\uff1a\u8f93\u51fa\u7ed3\u679c<\/h3>\n\n\n\n<p>\u76f4\u63a5 <code>print()<\/code> \u5373\u53ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ee3\u7801\u5b9e\u73b0<\/h2>\n\n\n\n<p>\u4e0b\u9762\u662f\u8fd9\u9053\u9898\u6700\u57fa\u7840\u3001\u6700\u9002\u5408\u521d\u5b66\u8005\u8bb0\u5fc6\u7684\u5199\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy\n\nP = list(map(float, input().split()))\nx = float(input())\n\nprint(numpy.polyval(P, x))\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd0\u884c\u6f14\u793a<\/h2>\n\n\n\n<p>\u6211\u4eec\u7528\u6837\u4f8b\u6765\u624b\u52a8\u8d70\u4e00\u904d\u3002<\/p>\n\n\n\n<p>\u8f93\u5165\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 2 3\n0\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u8bfb\u53d6\u7cfb\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>P = &#91;1.1, 2.0, 3.0]\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u8868\u793a\u591a\u9879\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1x^2 + 2x + 3\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u8bfb\u53d6 x<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>x = 0.0\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff1a\u4ee3\u5165\u8ba1\u7b97<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 * (0^2) + 2 * 0 + 3\n= 1.1 * 0 + 0 + 3\n= 3.0\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u56db\u6b65\uff1a\u8f93\u51fa<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>3.0\n<\/code><\/pre>\n\n\n\n<p>\u548c\u9898\u76ee\u6837\u4f8b\u4e00\u81f4\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8865\u5145\u7406\u89e3\uff1a\u4e3a\u4ec0\u4e48\u8fd9\u9898\u8981\u7528 float\uff0c\u800c\u4e0d\u662f int<\/h2>\n\n\n\n<p>\u56e0\u4e3a\u6837\u4f8b\u91cc\u7cfb\u6570\u51fa\u73b0\u4e86\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5df2\u7ecf\u4e0d\u662f\u6574\u6570\u4e86\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>list(map(int, input().split()))\n<\/code><\/pre>\n\n\n\n<p>\u7a0b\u5e8f\u4f1a\u62a5\u9519\uff0c\u56e0\u4e3a <code>int('1.1')<\/code> \u662f\u4e0d\u5408\u6cd5\u7684\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u9053\u9898\u91cc\u66f4\u7a33\u59a5\u7684\u5199\u6cd5\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>list(map(float, input().split()))\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8865\u5145\u7406\u89e3\uff1a<code>numpy.polyval()<\/code> \u5230\u5e95\u600e\u4e48\u7406\u89e3<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5148\u628a\u5b83\u8bb0\u6210\u4e00\u53e5\u8bdd\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><code>polyval<\/code> = polynomial value<br>\u4e5f\u5c31\u662f\u201c\u591a\u9879\u5f0f\u6c42\u503c\u201d<\/p>\n<\/blockquote>\n\n\n\n<p>\u5b83\u7684\u683c\u5f0f\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval(\u7cfb\u6570\u5217\u8868, x)\n<\/code><\/pre>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval(&#91;2, 3, 4], 5)\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\u6c42\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x^2 + 3x + 4\n<\/code><\/pre>\n\n\n\n<p>\u5728 <code>x = 5<\/code> \u65f6\u7684\u503c\uff0c\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2 * 25 + 3 * 5 + 4 = 69\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u65b9\u6cd5\u603b\u7ed3<\/h2>\n\n\n\n<p>\u4ee5\u540e\u770b\u5230\u8fd9\u7c7b\u9898\uff0c\u4f60\u53ef\u4ee5\u8fd9\u6837\u8bc6\u522b\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8bc6\u522b\u4fe1\u53f7<\/h3>\n\n\n\n<p>\u9898\u76ee\u51fa\u73b0\u8fd9\u4e9b\u5173\u952e\u8bcd\u65f6\uff0c\u901a\u5e38\u5c31\u662f\u8fd9\u7c7b\u9898\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>polynomial<\/li>\n\n\n\n<li>coefficients<\/li>\n\n\n\n<li>value at x<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e0b\u624b\u6a21\u677f<\/h3>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u76f4\u63a5\u5957\u8fd9\u4e2a\u601d\u8def\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5148\u8bfb\u5165\u7cfb\u6570\u5217\u8868<\/li>\n\n\n\n<li>\u518d\u8bfb\u5165 x<\/li>\n\n\n\n<li>\u7528 <code>numpy.polyval()<\/code> \u6c42\u503c<\/li>\n\n\n\n<li>\u8f93\u51fa\u7ed3\u679c<\/li>\n<\/ol>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy\n\nP = list(map(float, input().split()))\nx = float(input())\n\nprint(numpy.polyval(P, x))\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6613\u9519\u70b9\u56de\u987e<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u6700\u5e38\u89c1\u7684\u9519\u8bef\u6709\u4e09\u4e2a\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u628a\u7cfb\u6570\u987a\u5e8f\u7406\u89e3\u53cd\u4e86<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;1.1, 2, 3]\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1x^2 + 2x + 3\n<\/code><\/pre>\n\n\n\n<p>\u4e0d\u662f\u53cd\u8fc7\u6765\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u7528\u4e86 int \u800c\u4e0d\u662f float<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u7cfb\u6570\u53ef\u80fd\u5e26\u5c0f\u6570\uff0c\u6240\u4ee5\u8981\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>float\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u4e0d\u4f1a\u62c6\u8f93\u5165<\/h3>\n\n\n\n<p>\u8fd9\u4e00\u53e5\u4e00\u5b9a\u8981\u719f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>P = list(map(float, input().split()))\n<\/code><\/pre>\n\n\n\n<p>\u5b83\u7684\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>input()<\/code> \u8bfb\u5165\u6574\u884c<\/li>\n\n\n\n<li><code>split()<\/code> \u6309\u7a7a\u683c\u5207\u5f00<\/li>\n\n\n\n<li><code>map(float, ...)<\/code> \u628a\u6bcf\u4e00\u9879\u8f6c\u6210\u6d6e\u70b9\u6570<\/li>\n\n\n\n<li><code>list(...)<\/code> \u628a\u7ed3\u679c\u53d8\u6210\u5217\u8868<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ec3\u4e60<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5148\u81ea\u5df1\u505a\u8fd9\u9898\uff0c\u4e0d\u8981\u6025\u7740\u770b\u7b54\u6848\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec3\u4e60\u9898<\/h3>\n\n\n\n<p>\u8f93\u5165\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2 0 1\n3\n<\/code><\/pre>\n\n\n\n<p>\u8bf7\u8f93\u51fa\u591a\u9879\u5f0f\u5728 x = 3 \u65f6\u7684\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u63d0\u793a<\/h3>\n\n\n\n<p>\u7cfb\u6570 <code>[2, 0, 1]<\/code> \u8868\u793a\u7684\u591a\u9879\u5f0f\u662f\u4ec0\u4e48\uff1f<br>\u5148\u5199\u6210\u6807\u51c6\u5f62\u5f0f\uff0c\u518d\u628a <code>x = 3<\/code> \u4ee3\u8fdb\u53bb\u3002<br>\u4e5f\u53ef\u4ee5\u76f4\u63a5\u7528 <code>numpy.polyval()<\/code>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><code>numpy.polyval()<\/code> \u4e3a\u4ec0\u4e48 <code>[a, b, c]<\/code> \u8868\u793a\u7684\u662f <code>ax^2 + bx + c<\/code><\/h2>\n\n\n\n<p>\u8fd9\u4e2a\u95ee\u9898\u975e\u5e38\u5173\u952e\u3002\u5f88\u591a\u521d\u5b66\u8005\u7b2c\u4e00\u6b21\u770b\u5230 <code>numpy.polyval([a, b, c], x)<\/code> \u7684\u65f6\u5019\uff0c\u90fd\u4f1a\u6709\u540c\u4e00\u4e2a\u7591\u95ee\uff1a<\/p>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u662f <code>ax^2 + bx + c<\/code>\uff1f<br>\u4e3a\u4ec0\u4e48\u4e0d\u662f <code>a + bx + cx^2<\/code>\uff1f<br>\u8fd9\u4e2a\u6b21\u6570\u5230\u5e95\u662f\u8c01\u89c4\u5b9a\u7684\uff1f<\/p>\n\n\n\n<p>\u7b54\u6848\u662f\uff1a<strong>\u8fd9\u4e0d\u662f\u7a0b\u5e8f\u201c\u731c\u51fa\u6765\u201d\u7684\uff0c\u800c\u662f <code>polyval()<\/code> \u65e9\u5c31\u7ea6\u5b9a\u597d\u7684\u89c4\u5219\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><code>polyval()<\/code> \u7684\u56fa\u5b9a\u89c4\u5219<\/h2>\n\n\n\n<p><code>numpy.polyval(p, x)<\/code> \u91cc\uff0c\u53c2\u6570 <code>p<\/code> \u8868\u793a\u7684\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6309\u7167\u201c\u4ece\u9ad8\u6b21\u5230\u4f4e\u6b21\u201d\u7684\u987a\u5e8f\u6392\u5217\u7684\u7cfb\u6570\u5217\u8868<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c 1 \u4e2a\u6570\uff0c\u5bf9\u5e94\u6700\u9ad8\u6b21\u9879<\/li>\n\n\n\n<li>\u7b2c 2 \u4e2a\u6570\uff0c\u5bf9\u5e94\u6b21\u9ad8\u6b21\u9879<\/li>\n\n\n\n<li>\u7b2c 3 \u4e2a\u6570\uff0c\u5bf9\u5e94\u518d\u4f4e\u4e00\u9879<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>\u6700\u540e 1 \u4e2a\u6570\uff0c\u5bf9\u5e94\u5e38\u6570\u9879<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;a, b, c]\n<\/code><\/pre>\n\n\n\n<p>\u5e76\u4e0d\u662f\u968f\u4fbf\u5bf9\u5e94\u7684\uff0c\u800c\u662f\u56e0\u4e3a\u8fd9\u4e2a\u5217\u8868\u91cc\u4e00\u5171\u6709 3 \u4e2a\u7cfb\u6570\u3002<\/p>\n\n\n\n<p>3 \u4e2a\u7cfb\u6570\uff0c\u5c31\u8bf4\u660e\u8fd9\u4e2a\u591a\u9879\u5f0f\u6700\u591a\u662f 2 \u6b21\u5f0f\u3002<\/p>\n\n\n\n<p>\u4e8e\u662f\u5b83\u4f1a\u81ea\u52a8\u6309\u4e0b\u9762\u7684\u987a\u5e8f\u89e3\u91ca\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x^2 + b * x^1 + c * x^0\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ax^2 + bx + c\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u6700\u9ad8\u6b21\u662f 2 \u6b21<\/h2>\n\n\n\n<p>\u8fd9\u91cc\u7684\u5173\u952e\u89c4\u5f8b\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5982\u679c\u6709 n \u4e2a\u7cfb\u6570\uff0c\u90a3\u4e48\u6700\u9ad8\u6b21\u5c31\u662f n &#8211; 1 \u6b21<\/p>\n<\/blockquote>\n\n\n\n<p>\u56e0\u4e3a\u591a\u9879\u5f0f\u662f\u6309\u201c\u4ece\u9ad8\u5230\u4f4e\u201d\u4e00\u9879\u4e00\u9879\u6392\u4e0b\u6765\u7684\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7cfb\u6570\u4e2a\u6570<\/th><th>\u5bf9\u5e94\u6700\u9ad8\u6b21<\/th><\/tr><\/thead><tbody><tr><td>1 \u4e2a<\/td><td>0 \u6b21<\/td><\/tr><tr><td>2 \u4e2a<\/td><td>1 \u6b21<\/td><\/tr><tr><td>3 \u4e2a<\/td><td>2 \u6b21<\/td><\/tr><tr><td>4 \u4e2a<\/td><td>3 \u6b21<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1 \u4e2a\u7cfb\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;5]\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>5\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\u5e38\u6570\u591a\u9879\u5f0f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2 \u4e2a\u7cfb\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 3]\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x + 3\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3 \u4e2a\u7cfb\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 3, 4]\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x^2 + 3x + 4\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">4 \u4e2a\u7cfb\u6570<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;1, 2, 3, 4]\n<\/code><\/pre>\n\n\n\n<p>\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1x^3 + 2x^2 + 3x + 4\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b83\u662f\u600e\u4e48\u201c\u81ea\u52a8\u5bf9\u5e94\u201d\u7684<\/h2>\n\n\n\n<p>\u8fd9\u91cc\u7684\u201c\u81ea\u52a8\u201d\u5176\u5b9e\u4e0d\u662f\u667a\u80fd\u5224\u65ad\uff0c\u800c\u662f<strong>\u6309\u4f4d\u7f6e\u5957\u516c\u5f0f<\/strong>\u3002<\/p>\n\n\n\n<p>\u5047\u8bbe\u7cfb\u6570\u5217\u8868\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;c0, c1, c2, ..., cn]\n<\/code><\/pre>\n\n\n\n<p>\u90a3\u4e48 <code>polyval()<\/code> \u9ed8\u8ba4\u7406\u89e3\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>c0 * x^n + c1 * x^(n-1) + c2 * x^(n-2) + ... + cn\n<\/code><\/pre>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u628a\u5b83\u7406\u89e3\u6210\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5217\u8868\u6700\u5de6\u8fb9\uff1a\u6b21\u6570\u6700\u9ad8<\/li>\n\n\n\n<li>\u5217\u8868\u6700\u53f3\u8fb9\uff1a\u6b21\u6570\u6700\u4f4e<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5 <code>[a, b, c]<\/code> \u957f\u5ea6\u662f 3\uff0c\u4e5f\u5c31\u662f\u6700\u9ad8\u6b21\u662f 2\uff0c\u4e8e\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x^2 + b * x^1 + c * x^0\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u76f4\u63a5\u770b\u4e00\u4e2a\u5177\u4f53\u4f8b\u5b50<\/h2>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval(&#91;1.1, 2, 3], 0)\n<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a\u7cfb\u6570\u6709 3 \u4e2a\uff0c\u6240\u4ee5\u5b83\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1x^2 + 2x + 3\n<\/code><\/pre>\n\n\n\n<p>\u628a <code>x = 0<\/code> \u4ee3\u8fdb\u53bb\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 * 0^2 + 2 * 0 + 3 = 3.0\n<\/code><\/pre>\n\n\n\n<p>\u6240\u4ee5\u8f93\u51fa\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>3.0\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u518d\u770b\u4e00\u4e2a\u4f8b\u5b50\uff0c\u4f60\u4f1a\u66f4\u6e05\u695a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval(&#91;2, 0, 1], 3)\n<\/code><\/pre>\n\n\n\n<p>\u5148\u89e3\u91ca\u7cfb\u6570\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 0, 1]\n<\/code><\/pre>\n\n\n\n<p>\u5171\u6709 3 \u4e2a\u7cfb\u6570\uff0c\u6240\u4ee5\u662f 2 \u6b21\u591a\u9879\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x^2 + 0x + 1\n<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f\u4e2d\u95f4\u90a3\u4e2a <code>0<\/code> \u5f88\u91cd\u8981\uff0c\u5b83\u8868\u793a\u8fd9\u4e00\u9879\u201c\u6ca1\u6709\u201d\uff0c\u4f46\u4f4d\u7f6e\u4e0d\u80fd\u4e22\u3002<\/p>\n\n\n\n<p>\u628a <code>x = 3<\/code> \u4ee3\u8fdb\u53bb\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2 * 3^2 + 0 * 3 + 1\n= 2 * 9 + 0 + 1\n= 19\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u4e2d\u95f4\u6ca1\u6709\u67d0\u4e00\u9879\u65f6\uff0c\u4e5f\u5fc5\u987b\u5199 0<\/h2>\n\n\n\n<p>\u8fd9\u662f\u521d\u5b66\u8005\u7279\u522b\u5bb9\u6613\u9519\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982\u4f60\u60f3\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x^2 + 1\n<\/code><\/pre>\n\n\n\n<p>\u4f60\u4e0d\u80fd\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 1]\n<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a <code>[2, 1]<\/code> \u53ea\u6709 2 \u4e2a\u7cfb\u6570\uff0c<code>polyval()<\/code> \u4f1a\u628a\u5b83\u7406\u89e3\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x + 1\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5c31\u5b8c\u5168\u53d8\u4e86\u3002<\/p>\n\n\n\n<p>\u6b63\u786e\u5199\u6cd5\u5fc5\u987b\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 0, 1]\n<\/code><\/pre>\n\n\n\n<p>\u56e0\u4e3a\u5b83\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x^2 + 0x + 1\n<\/code><\/pre>\n\n\n\n<p>\u6240\u4ee5\u4f60\u53ef\u4ee5\u8bb0\u4e00\u53e5\u5f88\u5b9e\u7528\u7684\u8bdd\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u591a\u9879\u5f0f\u54ea\u4e00\u9879\u6ca1\u6709\uff0c\u7cfb\u6570\u4e5f\u8981\u8865 0\uff0c\u4e0d\u80fd\u76f4\u63a5\u7701\u6389\u4f4d\u7f6e\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u4e0d\u662f\u4ece\u4f4e\u6b21\u5230\u9ad8\u6b21<\/h2>\n\n\n\n<p>\u56e0\u4e3a <code>numpy.polyval()<\/code> \u8fd9\u4e2a\u51fd\u6570\u7684\u8bbe\u8ba1\u7ea6\u5b9a\u5c31\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u7cfb\u6570\u6309\u964d\u5e42\u6392\u5217\uff0c\u4e5f\u5c31\u662f\u4ece\u9ad8\u6b21\u5230\u4f4e\u6b21<\/p>\n<\/blockquote>\n\n\n\n<p>\u8fd9\u662f\u4e00\u79cd\u5e38\u89c1\u6570\u5b66\/\u7a0b\u5e8f\u7ea6\u5b9a\uff0c\u4e0d\u662f NumPy \u4e34\u65f6\u53d1\u660e\u7684\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;a, b, c]\n<\/code><\/pre>\n\n\n\n<p>\u9ed8\u8ba4\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ax^2 + bx + c\n<\/code><\/pre>\n\n\n\n<p>\u800c\u4e0d\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a + bx + cx^2\n<\/code><\/pre>\n\n\n\n<p>\u4f60\u5728\u505a\u9898\u65f6\uff0c\u4e0d\u8981\u81ea\u5df1\u91cd\u65b0\u5b9a\u4e49\u5b83\u7684\u987a\u5e8f\uff0c\u800c\u8981\u6309\u51fd\u6570\u89c4\u5219\u6765\u7406\u89e3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u773c\u5224\u65ad\u7684\u5c0f\u6280\u5de7<\/h2>\n\n\n\n<p>\u4ee5\u540e\u4f60\u770b\u5230\u4e00\u4e2a\u7cfb\u6570\u5217\u8868\uff0c\u53ef\u4ee5\u8fd9\u6837\u5feb\u901f\u5224\u65ad\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u5148\u6570\u6709\u51e0\u4e2a\u6570<\/h3>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;4, 5, 6, 7]\n<\/code><\/pre>\n\n\n\n<p>\u6709 4 \u4e2a\u6570\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u6700\u9ad8\u6b21\u5c31\u662f 4 &#8211; 1 = 3 \u6b21<\/h3>\n\n\n\n<p>\u6240\u4ee5\u5b83\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>4x^3 + 5x^2 + 6x + 7\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u66f4\u5bb9\u6613\u8bb0\u5fc6\u7684\u7406\u89e3\u65b9\u5f0f<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u628a\u6b21\u6570\u5199\u5728\u7cfb\u6570\u4e0a\u65b9\u6765\u7406\u89e3\u3002<\/p>\n\n\n\n<p>\u6bd4\u5982 <code>[a, b, c]<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a   b   c\n2   1   0\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a*x^2 + b*x^1 + c*x^0\n<\/code><\/pre>\n\n\n\n<p>\u518d\u6bd4\u5982 <code>[p, q, r, s]<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>p   q   r   s\n3   2   1   0\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>p*x^3 + q*x^2 + r*x + s\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u65b9\u6cd5\u975e\u5e38\u9002\u5408\u505a\u9898\u65f6\u624b\u52a8\u5206\u6790\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u8282\u5c0f\u7ed3<\/h2>\n\n\n\n<p>\u8fd9\u90e8\u5206\u4f60\u53ea\u8981\u7262\u7262\u8bb0\u4f4f\u4e09\u53e5\u8bdd\u5c31\u591f\u4e86\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u53e5\uff0c<code>numpy.polyval()<\/code> \u7684\u7cfb\u6570\u987a\u5e8f\u662f<strong>\u4ece\u9ad8\u6b21\u5230\u4f4e\u6b21<\/strong>\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u53e5\uff0c\u5982\u679c\u6709 <code>n<\/code> \u4e2a\u7cfb\u6570\uff0c\u90a3\u4e48\u6700\u9ad8\u6b21\u5c31\u662f <code>n - 1<\/code>\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\u53e5\uff0c\u5982\u679c\u67d0\u4e00\u9879\u4e0d\u5b58\u5728\uff0c\u4e5f\u5fc5\u987b\u7528 <code>0<\/code> \u5360\u4f4f\u4f4d\u7f6e\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;a, b, c]\n<\/code><\/pre>\n\n\n\n<p>\u4e4b\u6240\u4ee5\u8868\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ax^2 + bx + c\n<\/code><\/pre>\n\n\n\n<p>\u4e0d\u662f\u56e0\u4e3a\u7a0b\u5e8f\u201c\u731c\u201d\u51fa\u6765\u4e86\uff0c\u800c\u662f\u56e0\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e00\u5171 3 \u4e2a\u7cfb\u6570<\/li>\n\n\n\n<li>\u6700\u9ad8\u6b21\u5c31\u662f 2<\/li>\n\n\n\n<li>\u987a\u5e8f\u6309\u9ad8\u6b21\u5230\u4f4e\u6b21\u6392<\/li>\n\n\n\n<li>\u6240\u4ee5\u81ea\u7136\u5c31\u662f <code>a*x^2 + b*x + c<\/code><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c0f\u7ec3\u4e60<\/h2>\n\n\n\n<p>\u8bf7\u4f60\u81ea\u5df1\u5148\u5224\u65ad\u4e0b\u9762\u8fd9\u4e9b\u7cfb\u6570\u5217\u8868\u5206\u522b\u8868\u793a\u4ec0\u4e48\u591a\u9879\u5f0f\uff0c\u4e0d\u8981\u6025\u7740\u8fd0\u884c\u4ee3\u7801\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec3\u4e60 1<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;3, 4]\n<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a\uff1a\u4e00\u5171\u6709\u51e0\u4e2a\u7cfb\u6570\uff1f\u6700\u9ad8\u6b21\u662f\u51e0\u6b21\uff1f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec3\u4e60 2<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;5, 0, 2]\n<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a\uff1a\u4e2d\u95f4\u7684 <code>0<\/code> \u8868\u793a\u54ea\u4e00\u9879\u6ca1\u6709\uff1f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec3\u4e60 3<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;1, 2, 0, 7]\n<\/code><\/pre>\n\n\n\n<p>\u63d0\u793a\uff1a\u8fd9\u662f\u51e0\u6b21\u591a\u9879\u5f0f\uff1f\u6700\u540e\u4e00\u4e2a\u6570\u5bf9\u5e94\u4ec0\u4e48\u9879\uff1f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8865\u5145\u4e00\u8282\uff1a<code>numpy.polyval()<\/code> \u548c\u624b\u52a8\u5199 <code>a*x**2 + b*x + c<\/code> \u5230\u5e95\u6709\u4ec0\u4e48\u533a\u522b<\/h2>\n\n\n\n<p>\u8fd9\u4e2a\u95ee\u9898\u4e5f\u975e\u5e38\u91cd\u8981\u3002\u56e0\u4e3a\u5f88\u591a\u521d\u5b66\u8005\u770b\u5230\u8fd9\u9053\u9898\u65f6\uff0c\u7b2c\u4e00\u53cd\u5e94\u4f1a\u662f\uff1a<\/p>\n\n\n\n<p>\u201c\u6211\u76f4\u63a5\u5199 <code>a*x**2 + b*x + c<\/code> \u4e0d\u5c31\u884c\u4e86\u5417\uff1f\u201d<\/p>\n\n\n\n<p>\u4ece\u201c\u7ed3\u679c\u80fd\u4e0d\u80fd\u7b97\u51fa\u6765\u201d\u8fd9\u4e2a\u89d2\u5ea6\u8bf4\uff0c<strong>\u53ef\u4ee5<\/strong>\u3002<br>\u4f46\u4ece\u201c\u8fd9\u9053\u9898\u4e3a\u4ec0\u4e48\u66f4\u63a8\u8350 <code>numpy.polyval()<\/code>\u201d\u8fd9\u4e2a\u89d2\u5ea6\u8bf4\uff0c\u4e24\u8005\u8fd8\u662f\u6709\u660e\u663e\u533a\u522b\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5148\u8bf4\u7ed3\u8bba<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5148\u8bb0\u4f4f\u8fd9\u4e00\u53e5\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u624b\u52a8\u5199\u516c\u5f0f\uff0c\u9002\u5408\u201c\u5df2\u77e5\u56fa\u5b9a\u8868\u8fbe\u5f0f\u201d\u7684\u60c5\u51b5\u3002<br><code>numpy.polyval()<\/code>\uff0c\u9002\u5408\u201c\u5df2\u77e5\u7cfb\u6570\u5217\u8868\uff0c\u8ba9\u7a0b\u5e8f\u81ea\u52a8\u5904\u7406\u201d\u7684\u60c5\u51b5\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u9898\u76ee\u660e\u786e\u544a\u8bc9\u4f60\u5c31\u662f <code>ax^2 + bx + c<\/code><\/li>\n\n\n\n<li>\u800c\u4e14 <code>a\u3001b\u3001c<\/code> \u90fd\u5df2\u7ecf\u5355\u72ec\u7ed9\u51fa\u6765\u4e86<\/li>\n<\/ul>\n\n\n\n<p>\u90a3\u4f60\u624b\u5199\u516c\u5f0f\u5b8c\u5168\u6ca1\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u4f46\u662f\u8fd9\u9053\u9898\u4e0d\u662f\u8fd9\u6837\u3002<br>\u8fd9\u9053\u9898\u7ed9\u4f60\u7684\u4e0d\u662f\u5355\u72ec\u7684 <code>a\u3001b\u3001c<\/code>\uff0c\u800c\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 2 3\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\u201c\u4e00\u4e32\u7cfb\u6570\u201d\u3002<\/p>\n\n\n\n<p>\u8fd9\u65f6\u5019\u7528 <code>polyval()<\/code> \u5c31\u66f4\u81ea\u7136\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e24\u79cd\u5199\u6cd5\u5206\u522b\u662f\u4ec0\u4e48<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5199\u6cd5 1\uff1a\u624b\u52a8\u5199\u516c\u5f0f<\/h3>\n\n\n\n<p>\u5982\u679c\u4f60\u5df2\u7ecf\u77e5\u9053\u591a\u9879\u5f0f\u662f\u4e8c\u6b21\u7684\uff0c\u53ef\u4ee5\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a, b, c = map(float, input().split())\nx = float(input())\n\nprint(a * x**2 + b * x + c)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u6ca1\u6709\u9519\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5199\u6cd5 2\uff1a\u4f7f\u7528 <code>numpy.polyval()<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy\n\nP = list(map(float, input().split()))\nx = float(input())\n\nprint(numpy.polyval(P, x))\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e5f\u662f\u5bf9\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b83\u4eec\u6700\u672c\u8d28\u7684\u533a\u522b\u662f\u4ec0\u4e48<\/h2>\n\n\n\n<p>\u6700\u672c\u8d28\u7684\u533a\u522b\u4e0d\u5728\u201c\u7b97\u5f97\u5bf9\u4e0d\u5bf9\u201d\uff0c\u800c\u5728\u4e8e\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u624b\u52a8\u5199\u516c\u5f0f\uff1a\u4f60\u81ea\u5df1\u8d1f\u8d23\u5c55\u5f00<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><code>polyval()<\/code>\uff1a\u51fd\u6570\u5e2e\u4f60\u6309\u7cfb\u6570\u81ea\u52a8\u5c55\u5f00\u5e76\u8ba1\u7b97<\/h3>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff1a<\/p>\n\n\n\n<p>\u624b\u52a8\u5199\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x**2 + b * x + c\n<\/code><\/pre>\n\n\n\n<p>\u4f60\u662f\u5728\u660e\u786e\u544a\u8bc9\u7a0b\u5e8f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a\u6570\u4e58 <code>x**2<\/code><\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a\u6570\u4e58 <code>x<\/code><\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a\u6570\u76f4\u63a5\u52a0\u4e0a\u53bb<\/li>\n<\/ul>\n\n\n\n<p>\u800c <code>numpy.polyval(P, x)<\/code> \u662f\u5728\u544a\u8bc9\u7a0b\u5e8f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u91cc\u6709\u4e00\u7ec4\u7cfb\u6570<\/li>\n\n\n\n<li>\u4f60\u6309\u591a\u9879\u5f0f\u89c4\u5219\u81ea\u5df1\u53bb\u7b97\u5427<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u4e24\u8005\u7684\u533a\u522b\uff0c\u672c\u8d28\u4e0a\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e00\u4e2a\u662f\u201c\u6211\u81ea\u5df1\u5199\u6b7b\u516c\u5f0f\u201d<br>\u4e00\u4e2a\u662f\u201c\u6211\u628a\u89c4\u5219\u4ea4\u7ed9\u51fd\u6570\u5904\u7406\u201d<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8fd9\u9053\u9898\u66f4\u63a8\u8350 <code>polyval()<\/code><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u539f\u56e0 1\uff1a\u9898\u76ee\u7ed9\u7684\u662f\u201c\u7cfb\u6570\u5217\u8868\u201d\uff0c\u4e0d\u662f\u56fa\u5b9a\u53d8\u91cf\u540d<\/h3>\n\n\n\n<p>\u8fd9\u9053\u9898\u8f93\u5165\u7684\u662f\u4e00\u6574\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>1.1 2 3\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u79cd\u8f93\u5165\u5f62\u5f0f\u672c\u8eab\u5c31\u5f88\u9002\u5408\u5148\u53d8\u6210\u4e00\u4e2a\u5217\u8868\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>P = &#91;1.1, 2.0, 3.0]\n<\/code><\/pre>\n\n\n\n<p>\u800c <code>numpy.polyval(P, x)<\/code> \u6070\u597d\u5c31\u662f\u63a5\u6536\u201c\u7cfb\u6570\u5217\u8868\u201d\u7684\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c<strong>\u8f93\u5165\u5f62\u5f0f\u548c\u51fd\u6570\u5f62\u5f0f\u662f\u5929\u7136\u5339\u914d\u7684<\/strong>\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u624b\u52a8\u5199\uff0c\u5c31\u5fc5\u987b\u5148\u62c6\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a, b, c = map(float, input().split())\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5c31\u9690\u542b\u4e86\u4e00\u4e2a\u524d\u63d0\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4f60\u5df2\u7ecf\u77e5\u9053\u4e00\u5b9a\u53ea\u6709 3 \u4e2a\u7cfb\u6570<\/p>\n<\/blockquote>\n\n\n\n<p>\u4f46\u9898\u76ee\u771f\u6b63\u5f3a\u8c03\u7684\u662f\u201c\u591a\u9879\u5f0f\u7cfb\u6570\u201d\uff0c\u4e0d\u662f\u201c\u53ea\u5141\u8bb8\u4e8c\u6b21\u5f0f\u201d\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u4ece\u8868\u8fbe\u9898\u610f\u7684\u89d2\u5ea6\uff0c<code>polyval()<\/code> \u66f4\u8d34\u5207\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u539f\u56e0 2\uff1a<code>polyval()<\/code> \u66f4\u901a\u7528<\/h3>\n\n\n\n<p>\u624b\u52a8\u5199\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x**2 + b * x + c\n<\/code><\/pre>\n\n\n\n<p>\u53ea\u80fd\u5904\u7406\u4e8c\u6b21\u5f0f\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u9898\u76ee\u4e0b\u4e00\u6b21\u53d8\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2 3 4 5\n<\/code><\/pre>\n\n\n\n<p>\u4e5f\u5c31\u662f\u4e09\u6b21\u591a\u9879\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2x^3 + 3x^2 + 4x + 5\n<\/code><\/pre>\n\n\n\n<p>\u90a3\u4f60\u624b\u5199\u516c\u5f0f\u5c31\u5f97\u6539\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x**3 + b * x**2 + c * x + d\n<\/code><\/pre>\n\n\n\n<p>\u5982\u679c\u518d\u53d8\u6210\u56db\u6b21\u3001\u4e94\u6b21\uff0c\u4f60\u5c31\u8981\u7ee7\u7eed\u6539\u3002<\/p>\n\n\n\n<p>\u4f46 <code>polyval()<\/code> \u4e0d\u9700\u8981\u6539\u3002<\/p>\n\n\n\n<p>\u4e0d\u7ba1\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 3]\n<\/code><\/pre>\n\n\n\n<p>\u8fd8\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;2, 3, 4]\n<\/code><\/pre>\n\n\n\n<p>\u8fd8\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;1, 5, 2, 8, 9]\n<\/code><\/pre>\n\n\n\n<p>\u90fd\u53ef\u4ee5\u76f4\u63a5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval(P, x)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u5c31\u662f\u5b83\u6700\u5927\u7684\u4f18\u52bf\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u5b83\u4e0d\u662f\u53ea\u4f1a\u7b97\u4e00\u4e2a\u56fa\u5b9a\u516c\u5f0f\uff0c\u800c\u662f\u80fd\u7b97\u201c\u4efb\u610f\u6b21\u6570\u201d\u7684\u591a\u9879\u5f0f\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u539f\u56e0 3\uff1a\u66f4\u4e0d\u5bb9\u6613\u5199\u9519<\/h3>\n\n\n\n<p>\u624b\u52a8\u5199\u516c\u5f0f\u65f6\uff0c\u521d\u5b66\u8005\u5f88\u5bb9\u6613\u51fa\u9519\uff0c\u5e38\u89c1\u9519\u8bef\u6709\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u9519\u8bef 1\uff1a\u6b21\u6570\u5199\u9519<\/h4>\n\n\n\n<p>\u672c\u6765\u5e94\u8be5\u5199\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x**2 + b * x + c\n<\/code><\/pre>\n\n\n\n<p>\u7ed3\u679c\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x*2 + b * x + c\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u91cc <code>x**2<\/code> \u548c <code>x*2<\/code> \u5b8c\u5168\u4e0d\u662f\u4e00\u56de\u4e8b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">\u9519\u8bef 2\uff1a\u6f0f\u5199\u67d0\u4e00\u9879<\/h4>\n\n\n\n<p>\u6bd4\u5982\u672c\u6765\u5e94\u8be5\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x**2 + b * x + c\n<\/code><\/pre>\n\n\n\n<p>\u7ed3\u679c\u4e0d\u5c0f\u5fc3\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a * x**2 + c\n<\/code><\/pre>\n\n\n\n<p>\u628a\u4e2d\u95f4\u9879\u6f0f\u6389\u4e86\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">\u9519\u8bef 3\uff1a\u9ad8\u6b21\u4f4e\u6b21\u987a\u5e8f\u5199\u53cd<\/h4>\n\n\n\n<p>\u6bd4\u5982 <code>[a, b, c]<\/code> \u672c\u6765\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ax^2 + bx + c\n<\/code><\/pre>\n\n\n\n<p>\u4f46\u624b\u5199\u65f6\u6709\u4eba\u4f1a\u9519\u5199\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>a + bx + cx^2\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u7528 <code>polyval()<\/code> \u65f6\uff0c\u8fd9\u4e9b\u9519\u8bef\u4f1a\u5c11\u5f88\u591a\uff0c\u56e0\u4e3a\u4f60\u53ea\u9700\u8981\u4fdd\u8bc1\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7cfb\u6570\u987a\u5e8f\u5bf9<\/li>\n\n\n\n<li>\u8f93\u5165\u7c7b\u578b\u5bf9<\/li>\n<\/ul>\n\n\n\n<p>\u5269\u4e0b\u7684\u8ba1\u7b97\u7531\u51fd\u6570\u5b8c\u6210\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u539f\u56e0 4\uff1a\u4ee3\u7801\u66f4\u7b80\u6d01\uff0c\u4e5f\u66f4\u50cf\u201c\u5728\u89e3\u8fd9\u9053\u9898\u201d<\/h3>\n\n\n\n<p>\u8fd9\u53e5\u8bdd\u5f88\u91cd\u8981\u3002<\/p>\n\n\n\n<p>\u8fd9\u9053\u9898\u672c\u8d28\u4e0a\u4e0d\u662f\u5728\u8003\u4f60\u4f1a\u4e0d\u4f1a\u5c55\u5f00\u4e8c\u6b21\u8868\u8fbe\u5f0f\uff0c\u800c\u662f\u5728\u8003\u4f60\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f1a\u4e0d\u4f1a\u8bfb\u5165\u7cfb\u6570<\/li>\n\n\n\n<li>\u4f1a\u4e0d\u4f1a\u7406\u89e3\u591a\u9879\u5f0f\u7cfb\u6570\u7684\u987a\u5e8f<\/li>\n\n\n\n<li>\u4f1a\u4e0d\u4f1a\u4f7f\u7528 NumPy \u7684\u591a\u9879\u5f0f\u6c42\u503c\u51fd\u6570<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u4ece\u201c\u9898\u76ee\u8003\u70b9\u201d\u7684\u89d2\u5ea6\u8bf4\uff0c<code>polyval()<\/code> \u66f4\u7b26\u5408\u51fa\u9898\u4eba\u7684\u610f\u56fe\u3002<\/p>\n\n\n\n<p>\u6362\u53e5\u8bdd\u8bf4\uff1a<\/p>\n\n\n\n<p>\u624b\u52a8\u5199\u516c\u5f0f\uff0c\u662f\u4f60\u81ea\u5df1\u7ed5\u8fc7\u4e86\u51fd\u6570\u3002<br><code>polyval()<\/code>\uff0c\u624d\u662f\u5728\u76f4\u63a5\u4f7f\u7528\u8fd9\u9053\u9898\u60f3\u8ba9\u4f60\u638c\u63e1\u7684\u5de5\u5177\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u4e2a\u975e\u5e38\u76f4\u89c2\u7684\u5bf9\u6bd4<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u624b\u52a8\u5199\u6cd5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>a, b, c = map(float, input().split())\nx = float(input())\n\nprint(a * x**2 + b * x + c)\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u6bb5\u4ee3\u7801\u7684\u95ee\u9898\u4e0d\u662f\u9519\uff0c\u800c\u662f\u5b83\u53ea\u80fd\u5e94\u4ed8\u201c\u521a\u597d\u4e09\u4e2a\u7cfb\u6570\u201d\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><code>polyval()<\/code> \u5199\u6cd5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import numpy\n\nP = list(map(float, input().split()))\nx = float(input())\n\nprint(numpy.polyval(P, x))\n<\/code><\/pre>\n\n\n\n<p>\u8fd9\u6bb5\u4ee3\u7801\u7684\u597d\u5904\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8f93\u5165\u51e0\u4e2a\u7cfb\u6570\u90fd\u80fd\u5904\u7406<\/li>\n\n\n\n<li>\u4e0d\u9700\u8981\u4f60\u81ea\u5df1\u5c55\u5f00\u516c\u5f0f<\/li>\n\n\n\n<li>\u66f4\u9002\u5408\u201c\u591a\u9879\u5f0f\u7cfb\u6570\u5217\u8868\u201d\u8fd9\u79cd\u9898\u578b<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u90a3\u662f\u4e0d\u662f\u4ee5\u540e\u90fd\u4e0d\u8981\u624b\u52a8\u5199\u516c\u5f0f\u4e86<\/h2>\n\n\n\n<p>\u4e5f\u4e0d\u662f\u3002<\/p>\n\n\n\n<p>\u624b\u52a8\u5199\u516c\u5f0f\u5728\u4e0b\u9762\u8fd9\u4e9b\u60c5\u51b5\u4ecd\u7136\u5f88\u6709\u7528\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u5408\u624b\u52a8\u5199\u516c\u5f0f\u7684\u60c5\u51b5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u9898\u76ee\u8868\u8fbe\u5f0f\u5df2\u7ecf\u56fa\u5b9a<\/h4>\n\n\n\n<p>\u6bd4\u5982\u9898\u76ee\u660e\u786e\u7ed9\u4f60\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>y = 3x^2 + 2x + 1\n<\/code><\/pre>\n\n\n\n<p>\u53ea\u8ba9\u4f60\u8f93\u5165 <code>x<\/code>\uff0c\u6c42 <code>y<\/code>\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u65f6\u5019\u76f4\u63a5\u5199\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>3 * x**2 + 2 * x + 1\n<\/code><\/pre>\n\n\n\n<p>\u5f88\u81ea\u7136\uff0c\u4e5f\u5f88\u6e05\u695a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u4f60\u5728\u7ec3\u4e60\u57fa\u7840\u8fd0\u7b97<\/h4>\n\n\n\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5e42\u8fd0\u7b97 <code>**<\/code><\/li>\n\n\n\n<li>\u53d8\u91cf\u4ee3\u5165<\/li>\n\n\n\n<li>\u8868\u8fbe\u5f0f\u4e66\u5199<\/li>\n<\/ul>\n\n\n\n<p>\u90a3\u624b\u52a8\u5199\u516c\u5f0f\u53cd\u800c\u66f4\u9002\u5408\u8bad\u7ec3\u57fa\u7840\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u9002\u5408 <code>polyval()<\/code> \u7684\u60c5\u51b5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u7cfb\u6570\u662f\u6574\u4f53\u8f93\u5165\u7684\u4e00\u4e32\u6570\u636e<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u591a\u9879\u5f0f\u6b21\u6570\u4e0d\u56fa\u5b9a<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u9898\u76ee\u660e\u663e\u662f NumPy \u7ec3\u4e60<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">4. \u4f60\u60f3\u51cf\u5c11\u624b\u5199\u5c55\u5f00\u65f6\u7684\u9519\u8bef<\/h4>\n\n\n\n<p>\u8fd9\u9053\u9898\u5c31\u5c5e\u4e8e\u8fd9\u4e00\u7c7b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f60\u53ef\u4ee5\u8fd9\u6837\u7406\u89e3\u4e24\u8005\u5173\u7cfb<\/h2>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u628a\u5b83\u4eec\u60f3\u6210\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u624b\u52a8\u5199\u516c\u5f0f<\/h3>\n\n\n\n<p>\u50cf\u662f\u4f60\u81ea\u5df1\u62ff\u7b14\u7b97\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ax^2 + bx + c\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><code>polyval()<\/code><\/h3>\n\n\n\n<p>\u50cf\u662f\u4f60\u628a\u201c\u7cfb\u6570\u8868\u201d\u548c\u201cx \u7684\u503c\u201d\u4ea4\u7ed9\u4e00\u4e2a\u4e13\u95e8\u5e72\u8fd9\u4ef6\u4e8b\u7684\u5de5\u5177\uff0c\u5b83\u81ea\u52a8\u5e2e\u4f60\u7b97\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u4e24\u8005\u4e0d\u662f\u201c\u8c01\u5bf9\u8c01\u9519\u201d\u7684\u533a\u522b\uff0c\u800c\u662f\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e00\u4e2a\u66f4\u57fa\u7840\uff0c\u9002\u5408\u7ec3\u8868\u8fbe\u5f0f<br>\u4e00\u4e2a\u66f4\u901a\u7528\uff0c\u9002\u5408\u5904\u7406\u591a\u9879\u5f0f\u6570\u636e<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u672c\u8282\u5c0f\u7ed3<\/h2>\n\n\n\n<p>\u8fd9\u90e8\u5206\u53ef\u4ee5\u603b\u7ed3\u6210\u56db\u53e5\u8bdd\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c\u624b\u52a8\u5199 <code>a*x**2 + b*x + c<\/code> \u5f53\u7136\u53ef\u4ee5\u7b97\u51fa\u7ed3\u679c\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\uff0c\u4f46\u5b83\u9ed8\u8ba4\u4f60\u5df2\u7ecf\u77e5\u9053\u591a\u9879\u5f0f\u5c31\u662f\u4e8c\u6b21\u5f0f\uff0c\u800c\u4e14\u7cfb\u6570\u6570\u91cf\u56fa\u5b9a\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\uff0c<code>numpy.polyval()<\/code> \u66f4\u9002\u5408\u201c\u8f93\u5165\u662f\u4e00\u4e32\u7cfb\u6570\u201d\u7684\u9898\uff0c\u56e0\u4e3a\u5b83\u4f1a\u6309\u89c4\u5219\u81ea\u52a8\u5b8c\u6210\u591a\u9879\u5f0f\u6c42\u503c\u3002<\/p>\n\n\n\n<p>\u7b2c\u56db\uff0c\u6240\u4ee5\u8fd9\u9053\u9898\u66f4\u63a8\u8350 <code>polyval()<\/code>\uff0c\u4e0d\u662f\u56e0\u4e3a\u624b\u5199\u4e0d\u884c\uff0c\u800c\u662f\u56e0\u4e3a <code>polyval()<\/code> \u66f4\u901a\u7528\u3001\u66f4\u7a33\u3001\u66f4\u7b26\u5408\u9898\u76ee\u672c\u610f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u4e2a\u5f88\u5b9e\u7528\u7684\u5224\u65ad\u6807\u51c6<\/h2>\n\n\n\n<p>\u4ee5\u540e\u505a\u9898\u65f6\uff0c\u4f60\u53ef\u4ee5\u8fd9\u6837\u5224\u65ad\u8be5\u7528\u54ea\u79cd\u5199\u6cd5\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5982\u679c\u9898\u76ee\u7ed9\u4f60\u7684\u662f\u56fa\u5b9a\u516c\u5f0f<\/h3>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>y = 2x^2 + 3x + 1\n<\/code><\/pre>\n\n\n\n<p>\u90a3\u5c31\u624b\u52a8\u5199\u516c\u5f0f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5982\u679c\u9898\u76ee\u7ed9\u4f60\u7684\u662f\u7cfb\u6570\u5217\u8868<\/h3>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>2 3 1\n<\/code><\/pre>\n\n\n\n<p>\u90a3\u5c31\u4f18\u5148\u60f3\u5230\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>numpy.polyval()\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c0f\u7ec3\u4e60<\/h2>\n\n\n\n<p>\u4f60\u5148\u4e0d\u8981\u5199\u4ee3\u7801\uff0c\u5148\u5224\u65ad\u4e0b\u9762\u4e24\u9053\u9898\u66f4\u9002\u5408\u7528\u54ea\u79cd\u65b9\u5f0f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec3\u4e60 1<\/h3>\n\n\n\n<p>\u9898\u76ee\u76f4\u63a5\u544a\u8bc9\u4f60\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>y = 4x^2 + 5x + 6\n<\/code><\/pre>\n\n\n\n<p>\u53ea\u8f93\u5165 <code>x<\/code>\uff0c\u6c42 <code>y<\/code>\u3002<\/p>\n\n\n\n<p>\u63d0\u793a\uff1a\u8fd9\u91cc\u8868\u8fbe\u5f0f\u662f\u4e0d\u662f\u56fa\u5b9a\u7684\uff1f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7ec3\u4e60 2<\/h3>\n\n\n\n<p>\u9898\u76ee\u8f93\u5165\u7b2c\u4e00\u884c\u662f\u4e00\u4e32\u591a\u9879\u5f0f\u7cfb\u6570\uff0c\u7b2c\u4e8c\u884c\u662f <code>x<\/code>\u3002<\/p>\n\n\n\n<p>\u63d0\u793a\uff1a\u8fd9\u65f6\u4f60\u662f\u4e0d\u662f\u4e8b\u5148\u4e0d\u77e5\u9053\u6709\u51e0\u4e2a\u7cfb\u6570\uff1f<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9898\u76ee\u8003\u70b9 \u8fd9\u9053\u9898\u4e3b\u8981\u8003\u8fd9\u51e0\u4e2a\u70b9\uff1a \u5ba1\u9898 \u8f93\u5165\u662f\u4ec0\u4e48 \u7b2c\u4e00\u884c\uff1a\u591a\u9879\u5f0f P \u7684\u7cfb\u6570\uff0c\u7a7a\u683c\u5206\u9694\u3002\u7b2c\u4e8c\u884c\uff1a\u4e00\u4e2a\u6570 x\u3002 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-2095","post","type-post","status-publish","format-standard","hentry","category-text"],"_links":{"self":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/2095","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=2095"}],"version-history":[{"count":1,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/2095\/revisions"}],"predecessor-version":[{"id":2097,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/2095\/revisions\/2097"}],"wp:attachment":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=2095"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=2095"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=2095"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}