Hello the problem is stated on the uploaded paper

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- Mar 8th 2011, 12:00 PMRiazyI need help to understand this algebraic fraction problem
Hello the problem is stated on the uploaded paper

ImageShack® - Online Photo and Video Hosting - Mar 8th 2011, 12:08 PMe^(i*pi)
The key is recognising that the numerator is a perfect square:

note that - Mar 8th 2011, 12:17 PMRiazy
Ah thanks ;) I get stuck at basic things although I am studying at uni <(-_-)>

- Mar 8th 2011, 12:30 PMe^(i*pi)