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Python数据拟合——幂函数y=ax^bfrom scipy.optimize import curve_fitimport numpy as npimport matplotlib.pyplot as plt# 幂函数拟合xdata = [2,3,4,5,6,7]ydata = [2400,5300,8000,9700,10700,11200]plt.plot(xdata,ydata,'b-')### 定义拟合函数, y = a * x^b ###def target_func(x