1. Solve the initial value problem my' 2 my + xex sin3(:1:)cos2(a:), 34(0) 2 175. 4. Come up with a rstorder differential equation that is both separable and linear. Then solve it using the separation of variables method and the integrating factors method, and verify that you obtain the same answer. 141'98 81'99 5. Express 2217244209 in the form a + bi for real numbers a and b