1.) What is the best guess for the non-homogeneous solution to the differential equation $y''' - y'' + 4y' = 3t^2$

A.) $y = At^2 + Bt + C$                B) $y = At^2 + Bt $

C.) $y = At^3 + Bt^2 + Ct + D$                D) $y = At^3 + Bt^2 + Ct $


2.) Among the following, what is the best guess for the non-homogeneous solution to the differential equation $y'' + 4y = sin(2t)$

A.) $y = Atsin(2t)$                B) $y = Atsin(2t) + Btcos(2t) $

C.) $y = Asin(2t)$                D) $y = Asin(2t) + Bcos(2t) $


3.) Among the following, what is the best guess for the non-homogeneous solution to the differential equation $y'' + 2y' + 5y = sin(2t)$

A.) $y = Atsin(2t)$                B) $y = Atsin(2t) + Btcos(2t) $

C.) $y = Asin(2t)$                D) $y = Asin(2t) + Bcos(2t) $


4.) The LaPlace transform is a linear function

A.) TRUE