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Topic: ComplexExpand off by a factor of (-1)?
Replies: 1   Last Post: Feb 23, 2013 7:01 AM

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Bert RAM Aerts

Posts: 20
Registered: 12/2/10
Re: ComplexExpand off by a factor of (-1)?
Posted: Feb 23, 2013 7:01 AM
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On Friday, February 22, 2013 7:05:36 AM UTC+1, charl...@gmail.com wrote:
>
> ComplexExpand[(E^(I*y) - E^(-I*y))/2*I] I get a result of -Sin[y] instead of Sin[y]?



If you expect Sin[y] as answer, you probably meant /(2*I) in stead of /2 *I




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