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2answers
21 views

Rewriting solution in terms of hyperbolic trigs

I have to find the inverse laplace transform of: $\mathcal{L}^{-1}(\frac{s}{-8+2s+s^2})$ I found it was $\frac{2}{3}e^{-4t}+\frac{1}{3}e^{2t}$ But the question I'm asked is, determine $A,B,C,D$ ...
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1answer
513 views

Inverse Laplace Transform involving $\cosh$.

While doing an assignment on solving a PDE I stumbled into the following inverse Laplace transform question (involving $\cosh$? I can't believe it). Mathematica gives no solution and I have no idea ...