i wait 30 minute to  see the result of this function it will zero or not but is not give me outcome, is so importan for me which to see this function is my answer, how i can see the result, can  anyone give me the way 

T-pde.mw

i found the same as author found but is not give me zero when i replace in my pdes can anyone see the problem?

test.mw

i try to find the parameter in this equation but some issues show up which i am not sure i can fix that or not? there is any way for finding thus parameters?

test-F-p.mw

i did my try to sketch the best shape of graph by existing code but the 3D shape in matlab is not what i am looking and is  not intresting for this kind of plot so i want use and design a better shape of 3D plot for thus contour  i need help for that 

plot-help.mw

i did simplify and each time work but this time is give me another thing can anyone find what is problem?

pdetest2.mw