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[Post New]8 Nov 2006 14:38:20 IST
    Subject: algebra
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shruti (5)

New kid on the Block

Olaaa!! Perrrfect answer. 1  [1 rates]
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total posts: 13    
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Please answer this:

if u,v belongs to real no., and 2*f(u)*cos(v) = f(u+v) + f(u-v)
then prove that for real x,
f( - x) + f(-x) = 0



Shruti
    
 

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