Matematika

Pertanyaan

F(2x-3)=8x+1.maka f(-4) adalah

2 Jawaban

  • f (2x - 3) = 8x + 1

    f (2x - 3) = f (-4)
    2x - 3 = -4
    2x = -4 + 3
    2x = -1
    x = -1/2

    f (4)
    = 8 (-1/2) + 1
    = -4 + 1
    = -3
  • mencari f(x)
    f(2x - 3) = 8x + 1
    f(x) = 8(3 + x / 2) + 1
    f(x) = 4(3 + x) + 1
    f(x) = 12 + 4x + 1
    f(x) = 4x + 13

    mencari f(-4)
    f(-4) = 4x + 13
    f(-4) = 4(-4) +13
    f(-4) = -16 + 13
    f(-4) = -3

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