How to plot 2D and 3D graph for finite string problem in wave equation using old version maple 18?

Question:How to plot 2D and 3D graph for finite string problem in wave equation using old version maple 18?

Posted: superstar 5 Product: Maple 18

December 30 2018

partial differential equation question??

u_tt = 9u_xx

_{boundary conditions : u (0,t) = (2,t) = 0}

_{initial conditions : u (x,0) = f(x) = { x(2-x) ,0<x<1 , x ,1<x<2 = 0 , t>0 ,}

u_t(x,0) = 0 , 0<x<2

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