In each of 19 through 22, use eigenfunction expansions to
Chapter 11, Problem 22(choose chapter or problem)
In each of 19 through 22, use eigenfunction expansions to find the solution of the given boundary value problem.ut = uxx + et(1 x), u(0, t) = 0, ux(1, t) = 0, u(x, 0) = 0;see Section 11.2, 6 and 7.
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