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Jika f(x) = x - 2, g(x) = 3x + 1, dan h(x) = x2 + 4x - 3, nilai (g o h o f)(3) =

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Jika f(x) = x - 2, g(x) = 3x + 1, dan h(x) = x² + 4x - 3, nilai (g o h o f)(3) = …. 

   A. 93

   B. 53

   C. 29

   D. 15

   E. 7

Pembahasan:

f(x) = x – 2

g(x) = 3x + 1

h(x) = x² + 4x – 3

(g o h o f)(3) = …. ?

(g o h o f)(3) = (g o h)(f(3))

      = (g o h)(3 – 2)

      = g(h(1))

      = g(1² + 4(1) – 3)

      = g(1 + 4 – 3)

      = g(2)

      = 3(2) + 1

      = 6 + 1

      = 7

Jadi nilai (g o h o f)(3) = 7.

Jawaban: E

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