import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt
%matplotlib inline

plt.rcParams['font.sans-serif']='SimHei'

plt.rcParams['lines.linewidth']=2
plt.title("数学模型")
plt.xlabel("x")
plt.xlim((0,1))
plt.xticks([0,0.2,0.4,0.6,0.8,1])
plt.ylabel("y")
plt.ylim((0,1))
plt.yticks(np.arange(0,1,0.2))
data=np.arange(0.1,1.1,0.01)
plt.plot(data,data**2)
plt.rcParams['lines.linestyle']='-.'
plt.plot(data,data**4)
plt.legend(['y=x^2','y=x^4'],loc='lower right')
plt.savefig('./y=x^n.png')
plt.show()