fun-lim

Question: If $f(x)=\frac{{{x}^{2}}-1}{{{x}^{2}}+1}$, for every real numbers. then the minimum value of f



1) Does not exist because f is bounded
2) Is not attained even through f is bounded
3) Is equal to +1
4) Is equal to –1
Solution: Explanation: No Explanation
Functions

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