中文说明：对于有界热传导齐次方程的混合问题，用分离变量法求解往往很复杂。为了更好地理解热传导方程的解，使用MATLAB 软件将方程的解用图像表示出来。通过区域转换的思想，利用MATLAB 编程实现一定区域内热传导方程的有限差分方法，数值表明了方法的可行性和稳定性
English Description：
For bounded homogeneous heat conduction equation mixed problem, solved by separation of variables is often very complex. In order to better Understanding Solution heat conduction equation solving equations using MATLAB software with the image shown. Conversion of thinking through regional, Using MATLAB programming finite difference method for certain areas of heat conduction equations, numerical show the feasibility and stability of the method