Find the solution $of$ the wave equation $\frac{\text{d}\text{e}\text{l}\text{u}}{del{t}^2}=c^2\frac{\text{d}\text{e}\text{l}\text{u}}{del{x}^2}$ corresponding $to$ the initial

deflection

$u_t(x,0)=0u(0,t)=u(L,t)=0$