4. Solve the following Second Order Differential Equation, if the question provides initial value conditions then use to write your final answer. (a) y" 8y' 9y = 0, y(1) = 1, y'(1) = 0 (b) 4y" 9y = 0 5. Solve the following Second Order Differential Equation. (a) y" 3y' 4y = 4t2 1 (b) y" + 2y' = 3+4 sin(2t)