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Every invertible function isA. Monotonic functionB. Constant functionC. Identity functionD. Not necessarily monotonic function |
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Answer» Formula:- (i) The necessary and sufficient condition for differentiable function defined on (a, b) to be strictly increasing on (a, b) is that f’(x) > 0 for all x ∈ (a, b) If f(x) is strictly increasing function on interval [a, b], then f-1 exist and it is also a strictly increasing function |
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