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Let U(x,t) be the solution of the IBVP: Utt=4Uxx, x>0, t>0 ICs: U(x,0) = x, Ut(x,0)...

Let U(x,t) be the solution of the IBVP: Utt=4Uxx, x>0, t>0

ICs: U(x,0) = x, Ut(x,0) = 0, x>0

BCs: Ux(0,t) = 0

Find U(4,1) and U(1,2)

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