{"id":1146309,"date":"2025-01-08T23:15:51","date_gmt":"2025-01-08T15:15:51","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1146309.html"},"modified":"2025-01-08T23:15:53","modified_gmt":"2025-01-08T15:15:53","slug":"%e5%a6%82%e4%bd%95%e7%94%a8python%e6%b1%82%e8%a7%a3%e4%b8%80%e5%85%83%e4%ba%8c%e6%ac%a1%e6%96%b9%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1146309.html","title":{"rendered":"\u5982\u4f55\u7528python\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-kb.worktile.com\/kb\/wp-content\/uploads\/2024\/04\/24182424\/bd3f68e6-92de-4556-84f7-f306502e84c7.webp\" alt=\"\u5982\u4f55\u7528python\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\" \/><\/p>\n<p><p> <strong>\u7528Python\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u3001\u5229\u7528NumPy\u5e93\u3001\u901a\u8fc7SymPy\u5e93\u3001\u7f16\u5199\u81ea\u5b9a\u4e49\u51fd\u6570<\/strong>\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5176\u4e2d\u7684\u4e00\u4e2a\u65b9\u6cd5\uff1a\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u6c42\u89e3\u3002<\/p>\n<\/p>\n<p><p>\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u6807\u51c6\u5f62\u5f0f\u4e3a\uff1a(ax^2 + bx + c = 0)\u3002\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u6c42\u89e3\u7684\u65b9\u6cd5\u79f0\u4e3a\u6c42\u89e3\u65b9\u7a0b\u7684\u6839\u516c\u5f0f\u6216\u6c42\u6839\u516c\u5f0f\u3002\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<p><p>[ x = \\frac{-b \\pm \\sqrt{b^2 &#8211; 4ac}}{2a} ]<\/p>\n<\/p>\n<p><p>\u5176\u4e2d\uff1a<\/p>\n<\/p>\n<ul>\n<li>(a) \u662f\u4e8c\u6b21\u9879\u7cfb\u6570\uff0c<\/li>\n<li>(b) \u662f\u4e00\u6b21\u9879\u7cfb\u6570\uff0c<\/li>\n<li>(c) \u662f\u5e38\u6570\u9879\u3002<\/li>\n<\/ul>\n<p><p>\u6211\u4eec\u53ef\u4ee5\u7528Python\u7f16\u5199\u4e00\u4e2a\u51fd\u6570\u6765\u5b9e\u73b0\u8fd9\u4e2a\u516c\u5f0f\u3002<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>def solve_quadratic(a, b, c):<\/p>\n<p>    # \u8ba1\u7b97\u5224\u522b\u5f0f<\/p>\n<p>    discriminant = b2 - 4*a*c<\/p>\n<p>    if discriminant &gt; 0:<\/p>\n<p>        # \u4e24\u4e2a\u4e0d\u540c\u7684\u5b9e\u6839<\/p>\n<p>        root1 = (-b + math.sqrt(discriminant)) \/ (2*a)<\/p>\n<p>        root2 = (-b - math.sqrt(discriminant)) \/ (2*a)<\/p>\n<p>        return root1, root2<\/p>\n<p>    elif discriminant == 0:<\/p>\n<p>        # \u4e00\u4e2a\u5b9e\u6839<\/p>\n<p>        root = -b \/ (2*a)<\/p>\n<p>        return root<\/p>\n<p>    else:<\/p>\n<p>        # \u4e24\u4e2a\u865a\u6839<\/p>\n<p>        real_part = -b \/ (2*a)<\/p>\n<p>        imaginary_part = math.sqrt(-discriminant) \/ (2*a)<\/p>\n<p>        root1 = complex(real_part, imaginary_part)<\/p>\n<p>        root2 = complex(real_part, -imaginary_part)<\/p>\n<p>        return root1, root2<\/p>\n<h2><strong>\u6d4b\u8bd5\u51fd\u6570<\/strong><\/h2>\n<p>a = 1<\/p>\n<p>b = -3<\/p>\n<p>c = 2<\/p>\n<p>roots = solve_quadratic(a, b, c)<\/p>\n<p>print(f&quot;\u65b9\u7a0b\u7684\u89e3\u662f: {roots}&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b<\/h3>\n<\/p>\n<p><p>\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u662f\u6700\u57fa\u672c\u4e14\u76f4\u63a5\u7684\u65b9\u6cd5\uff0c\u8fd9\u79cd\u65b9\u6cd5\u901a\u8fc7\u6c42\u89e3\u5224\u522b\u5f0f\u6765\u786e\u5b9a\u65b9\u7a0b\u7684\u6839\u3002<strong>\u8fd9\u79cd\u65b9\u6cd5\u7684\u5173\u952e\u5728\u4e8e\u5224\u522b\u5f0f\u7684\u8ba1\u7b97<\/strong>\u3002<\/p>\n<\/p>\n<p><h4>1.1 \u5224\u522b\u5f0f\u7684\u8ba1\u7b97<\/h4>\n<\/p>\n<p><p>\u5224\u522b\u5f0f\u662f\u6307\u65b9\u7a0b\u4e2d (b^2 &#8211; 4ac) \u7684\u503c\u3002\u6839\u636e\u5224\u522b\u5f0f\u7684\u503c\uff0c\u53ef\u4ee5\u5224\u65ad\u65b9\u7a0b\u7684\u6839\u7684\u7c7b\u578b\uff1a<\/p>\n<\/p>\n<ul>\n<li><strong>\u5f53\u5224\u522b\u5f0f\u5927\u4e8e\u96f6\u65f6\uff0c\u65b9\u7a0b\u6709\u4e24\u4e2a\u4e0d\u540c\u7684\u5b9e\u6839<\/strong>\u3002<\/li>\n<li><strong>\u5f53\u5224\u522b\u5f0f\u7b49\u4e8e\u96f6\u65f6\uff0c\u65b9\u7a0b\u6709\u4e00\u4e2a\u5b9e\u6839<\/strong>\u3002<\/li>\n<li><strong>\u5f53\u5224\u522b\u5f0f\u5c0f\u4e8e\u96f6\u65f6\uff0c\u65b9\u7a0b\u6709\u4e24\u4e2a\u865a\u6839<\/strong>\u3002<\/li>\n<\/ul>\n<p><h4>1.2 \u5b9e\u73b0\u6b65\u9aa4<\/h4>\n<\/p>\n<ol>\n<li><strong>\u8ba1\u7b97\u5224\u522b\u5f0f<\/strong>\uff1a\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\u6765\u8ba1\u7b97\u5224\u522b\u5f0f\u3002<\/li>\n<li><strong>\u6839\u636e\u5224\u522b\u5f0f\u7684\u503c\u5224\u65ad\u6839\u7684\u7c7b\u578b<\/strong>\uff1a\n<ul>\n<li><strong>\u5982\u679c\u5224\u522b\u5f0f\u5927\u4e8e\u96f6<\/strong>\uff0c\u4f7f\u7528\u6839\u516c\u5f0f\u5206\u522b\u8ba1\u7b97\u4e24\u4e2a\u6839\u3002<\/li>\n<li><strong>\u5982\u679c\u5224\u522b\u5f0f\u7b49\u4e8e\u96f6<\/strong>\uff0c\u4f7f\u7528\u6839\u516c\u5f0f\u4e2d\u7684\u4e00\u4e2a\u90e8\u5206\u8ba1\u7b97\u552f\u4e00\u7684\u6839\u3002<\/li>\n<li><strong>\u5982\u679c\u5224\u522b\u5f0f\u5c0f\u4e8e\u96f6<\/strong>\uff0c\u8ba1\u7b97\u865a\u6839\u7684\u5b9e\u90e8\u548c\u865a\u90e8\uff0c\u4f7f\u7528Python\u7684<code>complex<\/code>\u7c7b\u578b\u6765\u8868\u793a\u865a\u6839\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><h3>\u4e8c\u3001\u4f7f\u7528NumPy\u5e93\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b<\/h3>\n<\/p>\n<p><p>NumPy\u662fPython\u4e2d\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u503c\u8ba1\u7b97\u5e93\uff0c\u53ef\u4ee5\u7528\u4e8e\u5404\u79cd\u79d1\u5b66\u8ba1\u7b97\u548c\u6570\u503c\u5206\u6790\u3002\u4f7f\u7528NumPy\u5e93\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u65b9\u6cd5\u76f8\u6bd4\u4e8e\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u66f4\u4e3a\u7b80\u6d01\u548c\u65b9\u4fbf\u3002<\/p>\n<\/p>\n<p><h4>2.1 NumPy\u5e93\u7684\u4f18\u52bf<\/h4>\n<\/p>\n<p><p>NumPy\u5e93\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u6570\u5b66\u51fd\u6570\u548c\u7ebf\u6027\u4ee3\u6570\u529f\u80fd\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u8fdb\u884c\u77e9\u9635\u8fd0\u7b97\u3001\u6570\u7ec4\u64cd\u4f5c\u548c\u6c42\u89e3\u7ebf\u6027\u65b9\u7a0b\u7ec4\u3002<strong>\u901a\u8fc7NumPy\u5e93\u7684<code>roots<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u76f4\u63a5\u6c42\u89e3\u591a\u9879\u5f0f\u65b9\u7a0b\u7684\u6839<\/strong>\u3002<\/p>\n<\/p>\n<p><h4>2.2 \u5b9e\u73b0\u6b65\u9aa4<\/h4>\n<\/p>\n<ol>\n<li><strong>\u5bfc\u5165NumPy\u5e93<\/strong>\uff1a\u4f7f\u7528<code>import numpy as np<\/code>\u5bfc\u5165NumPy\u5e93\u3002<\/li>\n<li><strong>\u5b9a\u4e49\u591a\u9879\u5f0f\u7684\u7cfb\u6570<\/strong>\uff1a\u4f7f\u7528NumPy\u7684<code>array<\/code>\u51fd\u6570\u5b9a\u4e49\u591a\u9879\u5f0f\u7684\u7cfb\u6570\u3002<\/li>\n<li><strong>\u6c42\u89e3\u591a\u9879\u5f0f\u7684\u6839<\/strong>\uff1a\u4f7f\u7528NumPy\u7684<code>roots<\/code>\u51fd\u6570\u6c42\u89e3\u591a\u9879\u5f0f\u7684\u6839\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">import numpy as np<\/p>\n<p>def solve_quadratic_with_numpy(a, b, c):<\/p>\n<p>    coefficients = np.array([a, b, c])<\/p>\n<p>    roots = np.roots(coefficients)<\/p>\n<p>    return roots<\/p>\n<h2><strong>\u6d4b\u8bd5\u51fd\u6570<\/strong><\/h2>\n<p>a = 1<\/p>\n<p>b = -3<\/p>\n<p>c = 2<\/p>\n<p>roots = solve_quadratic_with_numpy(a, b, c)<\/p>\n<p>print(f&quot;\u65b9\u7a0b\u7684\u89e3\u662f: {roots}&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e09\u3001\u4f7f\u7528SymPy\u5e93\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b<\/h3>\n<\/p>\n<p><p>SymPy\u662fPython\u4e2d\u4e00\u4e2a\u7528\u4e8e\u7b26\u53f7\u6570\u5b66\u8ba1\u7b97\u7684\u5e93\uff0c\u53ef\u4ee5\u5904\u7406\u4ee3\u6570\u65b9\u7a0b\u3001\u5fae\u79ef\u5206\u3001\u77e9\u9635\u8fd0\u7b97\u7b49\u3002\u4f7f\u7528SymPy\u5e93\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u65b9\u6cd5\u975e\u5e38\u76f4\u89c2\u548c\u7075\u6d3b\u3002<\/p>\n<\/p>\n<p><h4>3.1 SymPy\u5e93\u7684\u4f18\u52bf<\/h4>\n<\/p>\n<p><p>SymPy\u5e93\u53ef\u4ee5\u5904\u7406\u7b26\u53f7\u8fd0\u7b97\u548c\u89e3\u6790\u89e3\uff0c\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u52a0\u6570\u5b66\u5316\u7684\u6c42\u89e3\u65b9\u7a0b\u7684\u65b9\u6cd5\u3002<strong>\u901a\u8fc7SymPy\u5e93\u7684<code>solve<\/code>\u51fd\u6570\uff0c\u53ef\u4ee5\u76f4\u63a5\u6c42\u89e3\u65b9\u7a0b\u7684\u89e3\u6790\u89e3<\/strong>\u3002<\/p>\n<\/p>\n<p><h4>3.2 \u5b9e\u73b0\u6b65\u9aa4<\/h4>\n<\/p>\n<ol>\n<li><strong>\u5bfc\u5165SymPy\u5e93<\/strong>\uff1a\u4f7f\u7528<code>import sympy as sp<\/code>\u5bfc\u5165SymPy\u5e93\u3002<\/li>\n<li><strong>\u5b9a\u4e49\u7b26\u53f7\u53d8\u91cf\u548c\u65b9\u7a0b<\/strong>\uff1a\u4f7f\u7528SymPy\u7684<code>symbols<\/code>\u51fd\u6570\u5b9a\u4e49\u7b26\u53f7\u53d8\u91cf\uff0c\u4f7f\u7528<code>Eq<\/code>\u51fd\u6570\u5b9a\u4e49\u65b9\u7a0b\u3002<\/li>\n<li><strong>\u6c42\u89e3\u65b9\u7a0b<\/strong>\uff1a\u4f7f\u7528SymPy\u7684<code>solve<\/code>\u51fd\u6570\u6c42\u89e3\u65b9\u7a0b\u7684\u89e3\u6790\u89e3\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">import sympy as sp<\/p>\n<p>def solve_quadratic_with_sympy(a, b, c):<\/p>\n<p>    x = sp.symbols(&#39;x&#39;)<\/p>\n<p>    equation = sp.Eq(a*x2 + b*x + c, 0)<\/p>\n<p>    roots = sp.solve(equation, x)<\/p>\n<p>    return roots<\/p>\n<h2><strong>\u6d4b\u8bd5\u51fd\u6570<\/strong><\/h2>\n<p>a = 1<\/p>\n<p>b = -3<\/p>\n<p>c = 2<\/p>\n<p>roots = solve_quadratic_with_sympy(a, b, c)<\/p>\n<p>print(f&quot;\u65b9\u7a0b\u7684\u89e3\u662f: {roots}&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u7f16\u5199\u81ea\u5b9a\u4e49\u51fd\u6570\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b<\/h3>\n<\/p>\n<p><p>\u7f16\u5199\u81ea\u5b9a\u4e49\u51fd\u6570\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u7075\u6d3b\u8c03\u6574\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u7279\u5b9a\u573a\u666f\u3002\u81ea\u5b9a\u4e49\u51fd\u6570\u53ef\u4ee5\u7efc\u5408\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u3001NumPy\u5e93\u548cSymPy\u5e93\u7684\u65b9\u6cd5\uff0c\u63d0\u4f9b\u591a\u79cd\u6c42\u89e3\u65b9\u5f0f\u3002<\/p>\n<\/p>\n<p><h4>4.1 \u81ea\u5b9a\u4e49\u51fd\u6570\u7684\u4f18\u52bf<\/h4>\n<\/p>\n<p><p>\u81ea\u5b9a\u4e49\u51fd\u6570\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u6269\u5c55\u548c\u4f18\u5316\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u7279\u5b9a\u573a\u666f\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u589e\u52a0\u8f93\u5165\u9a8c\u8bc1\u3001\u5f02\u5e38\u5904\u7406\u3001\u7ed3\u679c\u683c\u5f0f\u5316\u7b49\u529f\u80fd\u3002<strong>\u81ea\u5b9a\u4e49\u51fd\u6570\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u548c\u53ef\u7ef4\u62a4\u6027<\/strong>\u3002<\/p>\n<\/p>\n<p><h4>4.2 \u5b9e\u73b0\u6b65\u9aa4<\/h4>\n<\/p>\n<ol>\n<li><strong>\u5b9a\u4e49\u51fd\u6570<\/strong>\uff1a\u6839\u636e\u5177\u4f53\u9700\u6c42\u5b9a\u4e49\u51fd\u6570\uff0c\u63a5\u53d7\u65b9\u7a0b\u7684\u7cfb\u6570\u4f5c\u4e3a\u8f93\u5165\u53c2\u6570\u3002<\/li>\n<li><strong>\u9009\u62e9\u6c42\u89e3\u65b9\u6cd5<\/strong>\uff1a\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u3001NumPy\u5e93\u6216SymPy\u5e93\u7684\u65b9\u6cd5\u3002<\/li>\n<li><strong>\u8fd4\u56de\u7ed3\u679c<\/strong>\uff1a\u6839\u636e\u6c42\u89e3\u7ed3\u679c\u8fd4\u56de\u6839\u7684\u5217\u8868\u6216\u5176\u4ed6\u683c\u5f0f\u5316\u7684\u7ed3\u679c\u3002<\/li>\n<\/ol>\n<p><pre><code class=\"language-python\">import math<\/p>\n<p>import numpy as np<\/p>\n<p>import sympy as sp<\/p>\n<p>def solve_quadratic_custom(a, b, c, method=&#39;math&#39;):<\/p>\n<p>    if method == &#39;math&#39;:<\/p>\n<p>        discriminant = b2 - 4*a*c<\/p>\n<p>        if discriminant &gt; 0:<\/p>\n<p>            root1 = (-b + math.sqrt(discriminant)) \/ (2*a)<\/p>\n<p>            root2 = (-b - math.sqrt(discriminant)) \/ (2*a)<\/p>\n<p>            return root1, root2<\/p>\n<p>        elif discriminant == 0:<\/p>\n<p>            root = -b \/ (2*a)<\/p>\n<p>            return root<\/p>\n<p>        else:<\/p>\n<p>            real_part = -b \/ (2*a)<\/p>\n<p>            imaginary_part = math.sqrt(-discriminant) \/ (2*a)<\/p>\n<p>            root1 = complex(real_part, imaginary_part)<\/p>\n<p>            root2 = complex(real_part, -imaginary_part)<\/p>\n<p>            return root1, root2<\/p>\n<p>    elif method == &#39;numpy&#39;:<\/p>\n<p>        coefficients = np.array([a, b, c])<\/p>\n<p>        roots = np.roots(coefficients)<\/p>\n<p>        return roots<\/p>\n<p>    elif method == &#39;sympy&#39;:<\/p>\n<p>        x = sp.symbols(&#39;x&#39;)<\/p>\n<p>        equation = sp.Eq(a*x2 + b*x + c, 0)<\/p>\n<p>        roots = sp.solve(equation, x)<\/p>\n<p>        return roots<\/p>\n<p>    else:<\/p>\n<p>        r<a href=\"https:\/\/docs.pingcode.com\/blog\/59162.html\" target=\"_blank\">AI<\/a>se ValueError(&quot;Invalid method. Choose &#39;math&#39;, &#39;numpy&#39;, or &#39;sympy&#39;.&quot;)<\/p>\n<h2><strong>\u6d4b\u8bd5\u51fd\u6570<\/strong><\/h2>\n<p>a = 1<\/p>\n<p>b = -3<\/p>\n<p>c = 2<\/p>\n<p>roots_math = solve_quadratic_custom(a, b, c, method=&#39;math&#39;)<\/p>\n<p>roots_numpy = solve_quadratic_custom(a, b, c, method=&#39;numpy&#39;)<\/p>\n<p>roots_sympy = solve_quadratic_custom(a, b, c, method=&#39;sympy&#39;)<\/p>\n<p>print(f&quot;\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u6c42\u89e3\u7684\u89e3\u662f: {roots_math}&quot;)<\/p>\n<p>print(f&quot;\u4f7f\u7528NumPy\u5e93\u6c42\u89e3\u7684\u89e3\u662f: {roots_numpy}&quot;)<\/p>\n<p>print(f&quot;\u4f7f\u7528SymPy\u5e93\u6c42\u89e3\u7684\u89e3\u662f: {roots_sympy}&quot;)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u901a\u8fc7\u4ee5\u4e0a\u56db\u79cd\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u4f7f\u7528Python\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u3002<strong>\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u662f\u6700\u57fa\u672c\u7684\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u7b80\u5355\u7684\u8ba1\u7b97<\/strong>\uff1b<strong>NumPy\u5e93\u63d0\u4f9b\u4e86\u7b80\u6d01\u7684\u6570\u503c\u8ba1\u7b97\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u79d1\u5b66\u8ba1\u7b97\u548c\u6570\u503c\u5206\u6790<\/strong>\uff1b<strong>SymPy\u5e93\u63d0\u4f9b\u4e86\u7b26\u53f7\u6570\u5b66\u8ba1\u7b97\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u4ee3\u6570\u65b9\u7a0b\u548c\u89e3\u6790\u89e3<\/strong>\uff1b<strong>\u81ea\u5b9a\u4e49\u51fd\u6570\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u6269\u5c55\u548c\u4f18\u5316\uff0c\u9002\u7528\u4e8e\u5404\u79cd\u7279\u5b9a\u573a\u666f<\/strong>\u3002<\/p>\n<\/p>\n<p><p>\u65e0\u8bba\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\uff0c\u90fd\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u5e94\u7528\u573a\u666f\u8fdb\u884c\u9009\u62e9\u548c\u8c03\u6574\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u7efc\u5408\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\uff0c\u7ed3\u5408\u5404\u81ea\u7684\u4f18\u52bf\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u7075\u6d3b\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u901a\u8fc7\u4e0d\u65ad\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u638c\u63e1Python\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u65b9\u6cd5\u548c\u6280\u5de7\uff0c\u4e3a\u79d1\u5b66\u8ba1\u7b97\u548c\u5de5\u7a0b\u5e94\u7528\u63d0\u4f9b\u6709\u529b\u7684\u652f\u6301\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u786e\u5b9a\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u7cfb\u6570\uff1f<\/strong><br \/>\u5728\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u6807\u51c6\u5f62\u5f0f\u4e2d\uff0c\u5373ax\u00b2 + bx + c = 0\uff0ca\u3001b\u3001c\u5206\u522b\u662f\u65b9\u7a0b\u7684\u7cfb\u6570\u3002\u8981\u89e3\u65b9\u7a0b\uff0c\u9996\u5148\u9700\u8981\u660e\u786e\u8fd9\u4e09\u4e2a\u7cfb\u6570\u3002a\u4e0d\u80fd\u4e3a\u96f6\uff0c\u5982\u679ca\u4e3a\u96f6\uff0c\u65b9\u7a0b\u5c06\u53d8\u4e3a\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\u3002\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u89c2\u5bdf\u65b9\u7a0b\u7684\u5f62\u5f0f\u6216\u76f4\u63a5\u4ece\u8f93\u5165\u4e2d\u63d0\u53d6\u7cfb\u6570\u3002<\/p>\n<p><strong>\u4f7f\u7528Python\u65f6\uff0c\u5982\u4f55\u5904\u7406\u590d\u6742\u7684\u6839\uff1f<\/strong><br \/>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u89e3\u53ef\u80fd\u662f\u590d\u6570\u3002\u8fd9\u79cd\u60c5\u51b5\u901a\u5e38\u53d1\u751f\u5728\u5224\u522b\u5f0fb\u00b2 &#8211; 4ac\u5c0f\u4e8e\u96f6\u65f6\u3002Python\u4e2d\u7684cmath\u5e93\u53ef\u4ee5\u5904\u7406\u590d\u6742\u7684\u6570\uff0c\u7528\u6237\u53ea\u9700\u4f7f\u7528cmath.sqrt()\u6765\u8ba1\u7b97\u5e73\u65b9\u6839\uff0c\u5e76\u5c06\u7ed3\u679c\u4e0e\u5176\u4ed6\u7cfb\u6570\u7ed3\u5408\uff0c\u4fbf\u53ef\u5f97\u5230\u590d\u6570\u89e3\u3002<\/p>\n<p><strong>\u5728Python\u4e2d\u5982\u4f55\u5904\u7406\u7528\u6237\u8f93\u5165\u7684\u65b9\u7a0b\uff1f<\/strong><br \/>\u7528\u6237\u53ef\u4ee5\u5229\u7528Python\u7684input()\u51fd\u6570\u6765\u63a5\u6536\u65b9\u7a0b\u7684\u7cfb\u6570\u8f93\u5165\u3002\u4e3a\u4e86\u786e\u4fdd\u8f93\u5165\u7684\u6709\u6548\u6027\uff0c\u53ef\u4ee5\u4f7f\u7528try-except\u8bed\u53e5\u6765\u6355\u6349\u53ef\u80fd\u7684\u9519\u8bef\uff0c\u4f8b\u5982\u975e\u6570\u5b57\u8f93\u5165\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0c\u7528\u6237\u80fd\u591f\u7075\u6d3b\u5730\u8f93\u5165\u4e0d\u540c\u7684\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u5e76\u8fdb\u884c\u6c42\u89e3\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u7528Python\u6c42\u89e3\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u6570\u5b66\u516c\u5f0f\u3001\u5229\u7528NumPy\u5e93\u3001\u901a\u8fc7SymPy\u5e93\u3001\u7f16\u5199\u81ea\u5b9a\u4e49\u51fd\u6570\u3002\u4e0b [&hellip;]","protected":false},"author":3,"featured_media":1146318,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1146309"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1146309"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1146309\/revisions"}],"predecessor-version":[{"id":1146320,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1146309\/revisions\/1146320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1146318"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1146309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1146309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1146309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}