- #1

Ric-Veda

- 32

- 0

## Homework Statement

Solve Laplace Transform L{tsin(2t)sin(5t)}

## Homework Equations

cos(bt)=s/s^2+b^2

trig identity (product identity): sin(a)sin(b)=1/2[cos(a-b)-cos(a+b)

t^nf(t)=(-1)^nd^n/ds^nF(S)

(the template is complicated for me to use. Srry for the inconvinience)

## The Attempt at a Solution

So far I have 1/2L{cos(-3)-1/2L{cos(7)}

1/2(s/s^2+4)-1/2(s/s^2+49)

Am I right?