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## Summary:

- I want to find inverse laplace of function 1/s(s^2+w^2)

I used partial fraction method first as:

1/s(s^2+w^2)=A/s+Bs+C/(s^2+w^2)

I found A=1/w^2

B=-1

C=0

1/s(s^2+w^2)=1/sw^2- s/s^2 +w^2

Taking invers laplace i get

1/w2 - coswt

But the ans is not correct kindly help.

1/s(s^2+w^2)=A/s+Bs+C/(s^2+w^2)

I found A=1/w^2

B=-1

C=0

1/s(s^2+w^2)=1/sw^2- s/s^2 +w^2

Taking invers laplace i get

1/w2 - coswt

But the ans is not correct kindly help.