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Solve the IVP, utt −uxx =sin(3πx)−7sin(4πx),0≤x≤1t∈R+
IC
u(x,0) = 5/4 sin(6 pi x) +1/3sin(4pi x)
ut (x,0) = 0
with the BC u(0,t)=0=u(1,t),t∈R +
Express the solution as a Fourier series.
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