The function f : (- , ) (-1,1), defined by f(x)= 2^x-2^ -x 2^x+2^ -x is :

JEE Main 2025 Mathematics question

The function , defined by is :

Answer: (1)

f'(x) is always positive so f is strictly increasing hence one-one. Range is (-1,1) which is not equal to

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Question ID VK-002044