If A = 2 ^ -1 ( 1+x 1-x ) and B = ^ -1 ( 1-x^2 1+x^2 ), where x (0,1), then A – B =

MHT CET 2022 Mathematics question

If A = and B = , where , then A – B =

Answer: (D)

For , , and , so and . For , put with

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Question ID VK-094026