Need help with PDE

[petspec19]

Hey, guys

I need help to solve the following PDE:

I am struggling with obtaining solution such that p varies with t and x. In my solution, Matlab only show initial value of P for all t and x.

Can you please review the code I attached and suggest better ways to achieve the goal.

Thanks.

 

[thorium1]

Perhaps some %comments explaining what you have done will be necessary.

 

[LiteYear]

Your code looks incomplete. For example, dss004.m doesn't define r4fdx. It looks like you've just copied it from here:

http://www.scholarpedia.org/article/Method_of_lines/example_implementation/dss004

anyway, so why remove all the commenting and the necessary prelim?

Sounds too suspicious to me at this stage to spend any longer on it. Will wait to hear back.