Inverse Laplace transforms

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A common technique for finding inverse Laplace transforms of rational functions is:

A.Partial fraction decomposition

B.The chain rule

C.Gaussian elimination

D.L'Hopital's rule

The inverse Laplace transform of $\frac{1}{s - 3}$ is:

e^{-3t}

e^{3t}

3t

\cos 3t

The inverse Laplace transform of 1/(s² + ω²) is:

A.cos(ωt)

B.(1/ω)sin(ωt)

C.e^{ωt}

D.sin(ωt)

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