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sin,cos函数图像绘制
import numpy as np
import pylab as pl
import matplotlib.font_manager as fm
import matplotlib
t=np.arange(0.0,2.0*np.pi,0.01)
s=np.sin(t)
z=np.cos(t)
pl.plot(t,s,label=\'正弦\')
pl.plot(t,z,label=\'余弦\')
pl.xlabel(\'x-变量\',fontproperties=\'SimHei\',fontsize=18)
pl.ylabel(\'y-正弦余弦函数值\',fontproperties=\'SimHei\',fontsize=18)
pl.title(\'sin-cos函数图像\',fontproperties=\'SimHei\',fontsize=24)
pl.show()