Apply separation of variables to the problem 2 u = 0 for 0
Chapter 18, Problem 18.8(choose chapter or problem)
Apply separation of variables to the problem 2 u = 0 for 0 < x < a, 0 < y < b, u(x, 0) = u y (x, b) = 0 for 0 x a, u(0, y) = 0, u(a, y) = g(y) for 0 y b.
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