Fourier Transforms: Get Help with Your Questions

[Belgium 12]

Hi members,

I have a problem with Fourier transforms.

There are two attached Pdf files.

My questions are on the Pdf files.Give me a little help.
Thank you

Belgium 12

 

[HallsofIvy]

Do you know that sinh(x)= \frac{e^x- e^{-x}}{2}? Changing everything into terms of exponentials should simplify these.