python之使用 Matplotlib 和系数绘制多项式

我的代码是:

import numpy as np 
import matplotlib as plt 
polyCoeffiecients = [1,2,3,4,5] 
plt.plot(PolyCoeffiecients) 
plt.show() 

结果是描述 1,2,3,4,5 中的点的直线以及它们之间的直线，而不是具有 1,2,3,4,5 的 5 次多项式作为它的系数 ( P(x) = 1 + 2x + 3x + 4x + 5x)

我该如何绘制仅包含其系数的多项式？

请您参考如下方法:

Eyzuky，看看这是不是你想要的:

import numpy as np 
from matplotlib import pyplot as plt 
 
def PolyCoefficients(x, coeffs): 
    """ Returns a polynomial for ``x`` values for the ``coeffs`` provided. 
 
    The coefficients must be in ascending order (``x**0`` to ``x**o``). 
    """ 
    o = len(coeffs) 
    print(f'# This is a polynomial of order {o}.') 
    y = 0 
    for i in range(o): 
        y += coeffs[i]*x**i 
    return y 
 
x = np.linspace(0, 9, 10) 
coeffs = [1, 2, 3, 4, 5] 
plt.plot(x, PolyCoefficients(x, coeffs)) 
plt.show()