- #1
Saladsamurai
- 3,020
- 7
Homework Statement
Solve y"+4y'=sin 3t subject to y(0)=y'(0)=0 using Laplace Transform
The Attempt at a Solution
So I got:
[tex]s^2Y(s)-sy(0)-y'(0)+4[sY(s)-y(0)]=\frac{3}{s^2+9}[/tex]
[tex]\Rightarrow Y(s)=\frac{3}{(s^2+9)(s^2+4)}[/tex]
Now it looks like two irreducible quadratics, which I know should not be too bad, but I have never dealt with more than one.
Now am I correct to say that
[tex]\frac{3}{(s^2+9)(s^2+4)}=\frac{Ax+B}{s^2+9}+\frac{Cx+D}{s^2+4}[/tex]
This is where I think I have the problem... the notation.
Thanks!