alovelypeach的博客

结果：代码：import ax as aximport numpy as npimport matplotlib.pyplot as mpx = np.linspace(-np.pi, np.pi,1000)y = np.cos(x)#设置坐标范围mp.xlim(-np.pi-0.5,np.pi+0.5)mp.ylim(-1.1,1.1)#设置刻度线mp.xticks(np.linspace(-np.pi,np.pi,5), [r'$-\pi$',r'$-\