Solving the 2D Laplace PDE using Separation of Variables

[@UzmaAliraza265]

It helped me alot..thankuuu sir.

[@mustafa_wajeah5682]

but what is the question's caption ? can somebody tell me please?

[@syedamarraza656]

you did a mistake in step 4 while substituting lemda = -p^2.
you forgot to change the sign and thus leading to a wrong solution

[@adelmahmoud1295]

Can you please do an example where f(x) = sin(x)?