Can someone help with these questions:

Aforced vibrating system is represented by d2 m y(t] + 4y(t) =44cos{2t), given that watt) = A sin {2 t) + .3 cos (2 t) is the general solution of the corresponding homogeneous ODE. Thus the natural frequency and the frequency of the driving force 44 cos (2 t} are the same. The solution of the differential equation will be of the form W) = mitt) + split}- where yp} is an oscillation which has a linearly increasing amplitude. Enter an expression in Maple syntax only the function dening ypft) in the box below. For example: if yp) = 3:2, enter 3*t"2 ypt') = E] El Find the solution of the initial value problem dy = 6y+ (-9x2 +4) 6: with y(0) = -6. Enter the answer box only the function of z which defines the solution. For example, if the solution is y (x) = (3 x + 4) e , enter (3*x+4)*exp(5*x) This question accepts formulas in Maple syntax. Plot | Help | Preview