JEE MAIN - Mathematics Hindi (2025 - 29th January Morning Shift - No. 23)

मान लें S = $ \left\{ x : \cos^{-1} x = \pi + \sin^{-1} x + \sin^{-1} [2x + 1] \right\} $। तब $ \sum\limits_{x \in S} (2x - 1)^2 $ _______ के बराबर है।
Answer
5

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