Question $4(2$ points$)$

Match proper $Y(t)$ and their equations:

$Y(t)=$Atcos$2t+$Btsin$2t$

$Y(t)=$Acost$+$Bsint

$Y(t)=(At+B)cos2t+$

$(Ct+D)sin2t$

$Y(t)=$Acos$2t+$Bsin$2t$

$y^{\text{'}\text{'}}+4y=cost$

$y^{\text{'}\text{'}}+4y=cos2t$

$y^{\text{'}\text{'}}-4y=cos2t$

$y^{\text{'}\text{'}}-4y=tcos2t$