Mathematics · 2014
JEE Main · 19 April 2014, Shift 1 · Q61
Let f: R → R be defined by f(x)=(|x|-1)/(|x|+1) then f is:
Let $\displaystyle f: \mathbf{R} \rightarrow \mathbf{R}$ be defined by $\displaystyle f(x)=\frac{|x|-1}{|x|+1}$ then $\displaystyle f$ is :
Official answer
(4)
neither one - one nor onto.
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JEE Main 2014 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.