proving identity

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sorry my mistake.

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- July 20th 2009, 02:58 AMz1llchidentity
proving identity

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sorry my mistake. - July 20th 2009, 03:21 AMyeongil
I assume that you mean this:

(*Either learn LaTex or use parentheses properly,*)**please**!

First of all, the right side is not simplified:

If you do this, then this problem is the exact same one I solved earlier for arze in this thread: http://www.mathhelpforum.com/math-he...255-prove.html.

01 - July 20th 2009, 03:27 AMz1llch
did tried to use conjugate. but couldnt simplify it..