Engineering Board Exam Reviewer · Inverse Laplace Transforms · easy

Find the inverse Laplace transform of F(s)=4/s3.

1. 4 t2
2. t2
3. 2 t3
4. 2 t2

Answer

D. 2 t2

Solution

Ltn= n!sn+1. Since Lt2=2/s3, we get 4/s3=2·2/s3, so f(t)=2t2.

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