QUESTION 3. Use the Laplace transform to solve the following initial value problems. a) y" + y' - 2y = −4e¯', y(0) = 4, y'(0) = −9
b) y" - 3y + 2y = { 0 2t for t < 3 for t > 3 y(0) = 3, y'(0) =