Range of the function \( f(x)=\cot ^{-1}\{-x\}+\sin ^{-1}\{x\}+\cos ^{-1}\{x\} \), where \( \{\c...

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Range of the function \( f(x)=\cot ^{-1}\{-x\}+\sin ^{-1}\{x\}+\cos ^{-1}\{x\} \), where \( \{\cdot\} \) denotes fractional part function
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