Tentukan (f o g o g)(x) jika f(x) = x2 - 2x - 3 dan g(x) = 2x - 1
Tentukan (f o g o g)(x) jika f(x) = x2 - 2x - 3 dan g(x) = 2x - 1!
Jawab:
f(x) = x2 - 2x - 3
g(x) = 2x - 1
(f o g o g)(x)
= (f o g)(2x – 1)
= f(2(2x – 1) – 1)
= f(4x – 3)
= (4x – 3)2 – 2(4x – 3) – 3
= 16x2 – 24x + 9 – 8x + 6 – 3
= 16x2 – 32x + 12
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