2. Show that the solution w(x1,) of the initial-value problem for the telegraph equation W-c²xx-c²x²w (1.27) w(x1,0)-0, w₁(x1,0)-(x1) (1.28) is given by (x1)()(y,)dy,. (1.29) Here 5-142-(x-5)² (1.30) while Jo denotes the Bessel function defined by Jo(2)=cost cos(z sine) do. (1.31)