Matematika

Pertanyaan

Diketahui f (x) =2x -1,g (x) =x + 3 dan h (x) = x pangkt 2, tentukan :
A. (Fog) (x)
B. (goh) (x)
C. (Fogoh) (x)
D. (Fog) (-2)
E. (Gohof) (2)

2 Jawaban

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    Gambar lampiran jawaban Saktiiw
  • A. (FoG) (x)=f(g(x)
    =f(x+3)
    = 2(x+3)-1
    =2x+6-1 =2x-5
    B.(gof)(x)=g(f(x)
    =g(2x-1)
    =2x-1+3
    =2x+2
    C.(fogoh)(x)=f(g(h(x)
    =f(g(x))
    =f(x+3)(x+3)
    =x²+3x+3x-9
    =x²+9x-9

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