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# Fourier Transforms Watch

1. NB: The answer at the bottom of image: j = i =
(Sorry, us Electronic Engineers don't do things properly - feel free to work in terms of i, I do )

I've been working through the problems in my maths notes from a couple of lectures that I might have been fairly drunk in, and came across this one which has thrown me.

I've done the first part, but I don't know how to use the frequency shift property for the next part :s

It's probably something rediculously simple :<

(Frequency shift property: if f(t) and F(W) are a Fourier Transform pair then and are also a Fourier Transform pair. )

2. Can you follow my working?

It's just some rough working to give you an idea of how the problem is solved. I'm sure that you can rigourise it.

[IMG][/IMG]
3. (Original post by steve10)

It's just some rough working to give you an idea of how the problem is solved. I'm sure that you can rigourise it.

[IMG][/IMG]
Ah thanks, will have a look and get back to you :-)

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Updated: December 30, 2010
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