Mathematics · 2017
JEE Main · 8 April 2017, Shift 1 · Q61
Let f(x)=2^10 · x+1 and g (x)=3^10 · x-1. If (f o g)(x)=x, then x is equal to:
Let $\displaystyle f(x)=2^{10} \cdot x+1$ and $\displaystyle \mathrm{g}(x)=3^{10} \cdot x-1$. If $\displaystyle (f o g)(x)=x$, then $\displaystyle x$ is equal to :
Official answer
(4)
$\displaystyle \frac{1-2^{-10}}{3^{10}-2^{-10}}$
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JEE Main 2017 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.