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Range of `f(x)=sin^(-1)x+tan^(-1)x+sec^(-1)x`isA. `((pi)/(4), (3pi)/(4))`B. `[(pi)/(4), (3pi)/(4)]`C. `{(pi)/(4), (3pi)/(4)}`D. none of these |
Answer» Correct Answer - C `f(x) = sin^(-1) x + tan^(-1) x + sec^(-1) x`, clearly, domain of `f(x) " is " x = +- 1` Thus, the range is `{f(1), f(-1)}`, i.e., `{(pi)/(4), (3pi)/(4)}` |
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