f(x) will be reduced to cos 9x + cos 10x
now f(pi) = cos 9pi + cos 10pi = -1 + 1 = 0
IF f(x)=cos[pi2]x + cos[-pi2]x,where [.] is the gif ,yhen value of f(pi) will b?
what i have recognised about this qyestion is that
this belongs to pi2-(9,10).
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2 Answers
Manmay kumar Mohanty
·2010-05-10 04:24:49