Question 3 (23 Marks) By reformulating the problem as a Cauchy initial value problem find the parametric solutions of the partial differential equation 1, which contains the parabola x = 1, y2 = 4y + 8u -20 and discuss the existence and uniqueness of the solution. u+ Question 3 (23 Marks) By reformulating the problem as a Cauchy initial value problem find the parametric solutions of the partial differential equation 1, which contains the parabola x = 1, y2 = 4y + 8u -20 and discuss the existence and uniqueness of the solution. u+