Community Answer

{:[" (a) "f(t)=t sin 3t-2t cos t],[L{f(t)}=int_(0)^(oo)e^(st)f(t)dt],[L(sin at)=(a)/(s^(2)+a^(2));quad L(cos at)=(s)/(s^(2)+a^(2))],[L(t sin 3t)=(-1)^(d)(d)/(ds)L(sin 3t)=(d-3)/(dss^(2)+9)=(6s)/((s^(2)+a)^(2)).],[L(-2 ... See the full answer