The inverse Laplace transform of the function text f left( text...

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The inverse Laplace transform of the function $${\text{f}}\left( {\text{s}} \right) = \frac{1}{{{\text{S}}\left( {{\text{S}} + 1} \right)}}$$ is

A. 1 + e^t

B. 1 - e^t

C. 1 + e^-t

D. 1 - e^-t

Answer: Option D

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