Matematika

Pertanyaan

f(x) = x-2 (fog) (x) = 3x + 1 ditanya g(x)

2 Jawaban

  • misal g(x) = a
    f(g(x))=3x+ 1
    f(a)=3x+1

    f(x)=x-2
    f(a)=a-2

    f(a)=f(a)
    3x+1 = a-2
    a=3x+3
    g(x)= 3x+3
  • komposisi fungsi

    f(x)= x - 2
    fog(x) = 3x + 1
    f{ g(x)} = 3x+ 1
    g(x) - 2 = 3x + 1
    g(x) = 3x + 1 + 2
    g(x)= 3x + 3

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