中文说明：求解偏微分方程的典型数值算法的代码，使用偏微分方程的差分解法，，并利用到了matlab pde求解器pdepe的算法，主要是将原来的椭圆形和抛物线形偏微分方程转化为一组常微分方程，很实用
English Description：
Code of typical numerical algorithms for solving partial differential equations, difference methods for partial differential equations, and the algorithm using the MATLAB PDE Solver, pdepe, mostly original elliptic and parabolic partial differential equations into a set of ordinary differential equations, it is useful