1. This code for heat equation I need to edit the boundary conditions to newmann conditions which are:
![2322_Draw the exact solution.png](https://secure.tutorsglobe.com/CMSImages/2322_Draw%20the%20exact%20solution.png)
And apply the explicit scheme in these boundary.
![709_Draw the exact solution1.png](https://secure.tutorsglobe.com/CMSImages/709_Draw%20the%20exact%20solution1.png)
2. Draw the exact solution and compare the results:
![1152_Draw the exact solution2.png](https://secure.tutorsglobe.com/CMSImages/1152_Draw%20the%20exact%20solution2.png)
3. Calculate the error between the exact solution and explicit solution.