Question Number 391 by 123456 last updated on 25/Jan/15
![f[f(x)]=f(x^2 )](https://www.tinkutara.com/question/Q391.png)
$${f}\left[{f}\left({x}\right)\right]={f}\left({x}^{\mathrm{2}} \right) \\ $$
Answered by prakash jain last updated on 27/Dec/14

$$\mathrm{The}\:\mathrm{equation}\:\mathrm{above}\:\mathrm{implies} \\ $$$${f}\left({x}\right)={x}^{\mathrm{2}} \\ $$