python之matplotlib畫二元函數圖像

from mpl_toolkits.mplot3d import Axes3D import numpy as np from matplotlib import pyplot as pltweb fig = plt.figure() ax = Axes3D(fig) x = np.arange(-2 * np.pi, 2 * np.pi, 0.1) y = np.arange(-2 * np.p

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