If y= ^ -1 ( 1 1+x+x^2 )+ ^ -1 ( 1 x^2+3x+3 )+ ^ -1 ( 1 x^2+5x+7 ) then the value of y'(0) is

MHT CET 2025 Mathematics question

If then the value of is

Answer: (C)

Use (from ). Here , and . So the three terms equal

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Question ID VK-103051