P [JEE Main-2020 (September)] (1) both conti nuous and differentiable on \( \mathrm{R}-\{-1\} \)...

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[JEE Main-2020 (September)]
(1) both conti nuous and differentiable on \( \mathrm{R}-\{-1\} \).
(2) both conti nuous and differentiable on \( \mathrm{R}-\{1\} \).
(3) continuous on \( R-\{-1\} \) and differentiable on
\( \mathrm{R}-\{-1,1\} \).
(4) continuous on \( \mathrm{R}-\{1\} \) and differentiable on
\( \mathrm{R}-\{-1,1\} \)
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