If f(x) + 27 - = 3x, x 70, and S = ...
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If f(x) + 27 - = 3x, x 70, and S = {XER: f(x) = f(-x)}; then S: (JEE(Main) 201 (1) contains exactly one element (3) contains more than two elements. (2) contains exactly two elements (4) is an empty set.

IIT/JEE
Maths
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( f(x)+2 fleft(frac{1}{x}right)=3 x, x eq 0 ) ( 5={x in R: quad f(x)=f(-x)} ) ( f(-x)+2 fleft(frac{-1}{x}right)=-3 x ) ( f(x)+2 fleft(frac{1}{x}right)=-3 x ) ( 3 x=(-3 x) ) is only possible when ( x=0 )
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