Python-Matplotlib 20 Tex公式
1 概念
matplotlib自带的mathtext引擎，不需要安装TeX系统
$作为开始和结束符，如"$y=x+x $"
EG1
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.set_xlim([1,7])
ax.set_ylim([1,5])
ax.text(2,4, r'$ alpha_i eta_j pi lambda omega $' , size=15)
ax.text(4,4, r'$ sin(0) = cost (frac {pi} {2}) $' , size=15)
ax.text(2,2 , r'$ lim_{x
ightarrow y} frac{1} {x^3} $', size=15)
ax.text(4,2 , r'$ sqrt[4] {x} = sqrt {y} $', size=15)
plt.show()
