Hi, I have the next expression:(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \frac{iw+3}{(iw-3)(iw+6)(iw+1)}[/tex]

Now I want to find the real part of this expression via mathematica or maple, and for the love of god it doesn't work, what have I done wrong here?!

the codes and their errors are in the attachments.

http://oi50.tinypic.com/25zs684.jpg

http://oi50.tinypic.com/24wfqt3.jpg

Peace out!

N.B

w is real parameter.

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# Maple Finding real part of an expression.

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