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Subject: Re: please help me!


Author:
geeknick (sad)
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Date Posted: 23:59:29 11/04/11 Fri
In reply to: QUITTNER 's message, "Re: please help me!" on 12:31:45 02/13/04 Fri

1/1+a^n + 1/1+a^-n
My attempt:=1/1+a^n + 1+a^n/1=1+{1+a^n(1+a^n)}/1+a^n=1+1+2a^n+a^n^2/1+a^n=2+2a^n+a^n^2/1+a^nlet a^n=m=2+2m+2m^2/1+m=2(1+m+m^2)/1+m
I don't know what to do next, the answer is supposed to be 1.

will you please simplify the expression its very urgent... i tried on Many forum sites but didn't get the correct answer according to my mathematics textbook.


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