Python：使用matplotlib画三角曲线图

import numpy as npimport matplotlib.pyplot as pltx=np.linspace(-10,10,1000)a=np.sin(x)b=np.cos(x)c=np.tan(x)d=np.log(x)plt.figure(figsize=(8,4))plt.plot(x,a,label='$sin(x)$',color='green',linewidth=0.5)plt.plot(x,b,label='$cos(x)$',color='red',linewidth=0.5)plt.plot(x,c,label='$tan(x)$',color='blue',linewidth=0.5)plt.plot(x,d,label='$log(x)$',color='grey',linewidth=0.5)plt.xlabel('Time(s)')plt.ylabel('Volt')plt.title('PyPlot')plt.xlim(-10,10)plt.ylim(-5,5)plt.legend()plt.show()