JEE Main 2023 · 25 January · morning · Single correct · +4 / −1

Let y(x) = (1 + x)(1 + x²)(1 + x⁴)(1 + x⁸)(1 + x¹⁶). Then y' - y'' at x = - 1 is equal to

  1. (a) 496
  2. (b) 976
  3. (c) 464
  4. (d) 944
Answer and solution

Answer (a) 496

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Asked about 40 times in JEE Main since 2020. This question is from 2023.