python用最小二乘法拟合正弦函数

#载入库 import numpy as np from scipy.optimize import leastsq import pylab as pl #定义函数形式和误差 def func(x,p): A,k,theta=p return A*np.sin(2*np.pi*k*x+theta) def residuals(p,y,x): return y-func(

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