Find a formal solution to the following initial-boundary value problem. du = 4 at 0 0,...

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Find a formal solution to the following initial-boundary value problem. du = 4 at 0<x<T, t> 0, du t>0, a(0,t) = 0, u(1,t) = 0 u(x,0) = f(x), 0<x<T u(x.t) = E an n = 0 where f(x)-Σ a n =0 Find a formal solution to the following initial-boundary value problem. du = 4 at 0<x<T, t> 0, du t>0, a(0,t) = 0, u(1,t) = 0 u(x,0) = f(x), 0<x<T u(x.t) = E an n = 0 where f(x)-Σ a n =0