.A. Write the given system in matrix form: x' = (2t)x + 3y y' = e'x + (cos(t))y B. Solve by using the method of Laplace transforms: y" +9y = 2x + 4;y(0) = 0; y'(0) = 1 C.Solve the given (matrix) linear system: X' = [1 2 3 4] X