Matematika

Pertanyaan

Diketahui F'(x) = 3x kaudrat - 4x + 2 dan F(-1) = -2, maka f(x) =

2 Jawaban

  • f'(x) = 3x² - 4x + 2

       F(x) = ∫ 3x² - 4x + 2 dx
               = x³ - 2x² + 2x + c
    F(- 1) = ( - 1)³ - 2 (-1)² + 2(-1) + c
       - 2   = - 1 - 2 - 2 + c
       - 2   = - 5 + c
         c   = 5 - 2
         c   = 3

    jadi, F (x) = x³ - 2x² + 2x + 3
  • Langsung aja y

    f'(x) = 3x² - 4x + 2
    f(x) = x³ - 2x² + 2x + c

    f(-1) = (-1)³ - 2(-1)² + 2(-1) + c
    -2 = -1 - 2 - 2 + c
    -2 = -5 + c
    c = 5 - 2
    c = 3

    f(x) = x³ - 2x² + 2x + 3

    Semoga berguna +_+

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