find a solution for uxx=RGu+(RC+LG)du/dt + LCutt (this is a PDE). Solution should look like: let u(x,t)=Ae^(-beta*t)cos(w*t+k*x)

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find a solution for uxx=RGu+(RC+LG)du/dt + LCutt (this is a PDE). Solution should look like: let u(x,t)=Ae^(-beta*t)cos(w*t+k*x)