fun-lim

Question: Domain of $f(x)={{({{x}^{2}}-1)}^{-1/2}}$ is



1) $(-\infty ,\ -1)\cup (1,\ \infty )$
2) $(-\infty ,\ -1]\cup (1,\ \infty )$
3) $(-\infty ,\ -1]\cup [1,\ \infty )$
4) None of these
Solution: Explanation: No Explanation
Functions

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