CBSE

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

If y=f(x)=x+2x−1y=f(x)=\frac{x+2}{x-1}, then x=x= (a) f(y)f(y) (b) 2f(y)2f(y) (c) 1f(y)\frac{1}{f(y)} (d) None of these

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