Consider the heat equation di that models the temperature at a beam with length = The ends of the beam are at zero temperature all the time. The initial temperature at this beam is f(x)=3sin (8x)-5sin (121). Calculate the solution of this equation O O (,)-sin(4x) (-²) # u(x,)-3sin(4x)-(²) -9 2sin (8r)-Ssin (12) 3sin (8x) -64-5sim (12x)e-144

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