Mark the correct alternative in the following question:Let f : R → R – InterviewSolution

1.	Mark the correct alternative in the following question:Let f : R → R be given by f(x) = tanx. Then, f -1(1) is(a) π4 (b) nπ+π4:n∈Z (c) does not exist (d) none of these
Answer» Mark the correct alternative in the following question: Let f : R $\to$ R be given by f(x) = tanx. Then, f ^{$-$ 1}(1) is (a) $\frac{π}{4}$ (b) $\{n π + \frac{π}{4} : n \in Z\}$ (c) does not exist (d) none of these

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