plz help me solve it step by step

2n+1 (6) Show that the power series y(x) = > (2n + 1)! is a solution of the differential equation y"(x) - y(r) = 0. Note that y(0) = 0. Can you find another solution, s(x) say, with s(0) = 4. Hint: If you differentiate y(ar) twice, you will get the same series. Do it so that you see it