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B
−π4
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C
π3
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D
−π3
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Solution
The correct option is B−π4 We know that f(x) = tan−1(x) is an odd funtion. Then from the property of odd functions we can say f(−x)=−f(x)ortan−1(−x)=−tan−1(x)tan−1(x)=π4(Given)tan−1(−x)=−tan−1(x)=−π4