Let `f : R- gtR` be a function defined by `f(x)=(e^|xl-e^(-x))/(e^x+e^(-x)` then- (1) fis a bij...
1,239 views · Published 12 October 2018 · 6:56 · Indexed 29 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Let `f : R- gtR` be a function defined by `f(x)=(e^|xl-e^(-x))/(e^x+e^(-x)` then- (1) fis a bijection (2) fis an injection only (3) fis a surjection (4) fis neither injection nor a surjection f(x) elx
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