fun-lim

Question: If $f(x)=\log \left[ \frac{1+x}{1-x} \right]$, then $f\left[ \frac{2x}{1+{{x}^{2}}} \right]$ is equal to



1) ${{[f(x)]}^{2}}$
2) ${{[f(x)]}^{3}}$
3) $2f(x)$
4) $3f(x)$
Solution: Explanation: No Explanation
Functions

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