Use Fourier transform to solve partial differential upartial

Use Fourier transform to solve partial differential u/partial differential t = k partial differential^2 u/partial differential x^2 - gamma u, -infinity

Solution

l(du/dt) =k l(d²u/dx₂) - l(yu)

l(y)-s y(0)-y^/(0) =k l(d²u/dx₂) -l(yu) and put the initial condition proceed to get the answer