OK, here's the problem(adsbygoogle = window.adsbygoogle || []).push({});

[tex]L^{-1}\{\frac{s}{s^2+4s+5}\}[/tex]

What I did:

[tex]L^{-1}\{\frac{s}{(s+2)^2+1}\}[/tex]

[tex]=e^{2t}\cos{t}[/tex]

The book says:

[tex]=e^{2t}\cos{t}-2e^{2t}\sin{t}[/tex]

Where did the [itex]2e^{2t}\sin{t}[/itex] come from?

Mahalo.

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# Homework Help: Laplace is hurting my brain

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