Matematika

Pertanyaan

jika f(x)=3x^2-2ax+7 f'(1)=0 maka f'(2)=

2 Jawaban

  • TURUNAN

    f'(x) = 6x - 2a
    f'(1) = 6(1) - 2a
    0 = 6 - 2a
    2a = 6
    a = 3

    f'(x) = 6x - 2(3)
    f'(x) = 6x - 6

    f'(2) = 6(2) - 6
    f'(2) = 12 - 6
    f'(2) = 6
  • f ' x = 6x - 2a
    f ' (1)=0
    6×1 - 2a = 0
    2a = 6
    a=3
    f ' (2)= 6×2 - 2×3
    =12 - 6
    =6

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