擅长:python、mysql、java
<p>我给你举一个如何找到二次拟合的例子:</p>
<pre><code>import numpy as np
import matplotlib.pyplot as plt
%matplotlib inline
points = np.array([(0, 2), (1, 3), (2, 6), (3, 11),(4,18),(5,27)])
# get x and y vectors
x = points[:,0]
y = points[:,1]
# calculate polynomial
z = np.polyfit(x, y, 2)
z
</code></pre>
<p>输出:</p>
^{pr2}$
<p>这意味着x**2+4.2765887e-15*x+2</p>