MCQHardJEE Main 2025 · 4 April, Shift 2Derivatives of Functions

Mathematics Question from JEE Main 2025 · 4 April, Shift 2

Let ff be a differentiable function on R\mathbb{R} such that f(2)=1f(2) = 1 and f(2)=4f'(2) = 4. Let limx0(f(2+x))3/x=eα\lim_{x \to 0} \left( f(2+x) \right)^{3/x} = e^\alpha. Then the number of times the curve y=4x34x24(α7)xαy = 4x^3 - 4x^2 - 4(\alpha - 7)x - \alpha meets the x-axis is:

  • A

    22

  • B

    11

  • C

    00

  • D

    33

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