Solve the wave equation for the vibration of a string stretched between the end-points x = 0 and x = L.
Subject to the boundary conditions:
1) u(0, t) = 0 for t ≥ 0 (fixed at the end x = 0).
2) u(L, t) = 0 for t ≥ 0 (fixed at the end x = L).
And the initial conditions:
3) u(x, 0) = F(x) (given initial displacement)
4) ∂u(x,0)/∂t = 0 for 0 ≤ x ≤ L (zero initial velocity)