fun-lim

Question: If $f(x)=\frac{x}{\sqrt{1+{{x}^{2}}}}$, then $(fofof)(x)=$



1) $\frac{3x}{\sqrt{1+{{x}^{2}}}}$
2) $\frac{x}{\sqrt{1+3{{x}^{2}}}}$
3) $\frac{3x}{\sqrt{1+{{x}^{2}}}}$
4) None of these
Solution: Explanation: No Explanation
Functions

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