In each of Problems 1 through 10, find the general solution of the given differential equation. 2. y" – y’ – 2y = –2t + 412 3. y" + y' – 6y = 12e3+ + 12e-2 4. y" – 2y' – 3y = -3te-+ 5. y" + 2y' = 3 + 4 sin( 2t)