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Topic: Help with finding zeros
Replies: 7   Last Post: Sep 14, 2010 3:35 PM

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Bob Adams

Posts: 55
Registered: 12/13/04
Help with finding zeros
Posted: Sep 13, 2010 9:32 AM
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I could use a little help trying to solve the following engineering
problem (no, I am not a student looking for homework help!)

I need to find the values of w which cause the following summation to
go to zero

sum (n = 1 to N) of exp(-i*w*ln(n))

where i is the usual sqrt(-1)

For a given N, there are infintely many solutions due to the
periodicity of exp(-i ...)
How do I find these solutions?

Thanks for any pointers.

Bob Adams





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