Bar with heat generation if heat is generated at a constant rate throughout a bar of length L = with initial temperature f(x) and the

Bar with heat generation if heat is generated at a constant rate throughout a bar of length L = π with initial temperature f(x) and the ends at x = 0 and π are kept at temperature 0, the heat equation is ut = c2 uxx + H with constant H > 0. Solve this problem.