fun-lim

Question: The domain of the derivative of the function $f(x) = \begin{cases} {\tan ^{ - 1}}x\;\;\;\;\;,\;|x|\; \le 1\\ \frac{1}{2}(|x|\; - 1)\;,\;|x|\; > 1 \end{cases}$ is



1) $R-\{0\}$
2) $R-\{1\}$
3) $R-\{-1\}$
4) $R-\{-1,\ 1\}$
Solution: Explanation: No Explanation
Functions

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