Hello, I'm currently taking a course in mathematics. We're supposed to be using the Advanced Engineering Mathematics book has been sold out for a while and I haven't gotten it yet. So I'm trying to solve a problem and failing, and would like to ask if anyone has a clue.

I'm woundering about the third problem here. I calculated the fourier transformation and got sqrt(2/pi) * sin(omega)/omega. I got this because I disregarded the i*sin(omega*X) part when integrating due to it being a symetric integral. Any help is greatly appreciated.

I'm woundering about the third problem here. I calculated the fourier transformation and got sqrt(2/pi) * sin(omega)/omega. I got this because I disregarded the i*sin(omega*X) part when integrating due to it being a symetric integral. Any help is greatly appreciated.
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