Tentukan (g o f o f)(x) jika f(x) = x - 3 dan g(x) = 2x2 + 5x - 1
Tentukan (g o f o f)(x) jika f(x) = x - 3 dan g(x) = 2x² + 5x - 1!
Jawab:
f(x) = x – 3
g(x) = 2x² + 5x – 1
(g o f o f)(x) = (g o f)(x – 3)
= g(f(x – 3))
= g(x – 3 – 3)
= g(x – 6)
= 2(x – 6)² + 5(x – 6) – 1
= 2(x² – 12x + 36) + 5x – 30 – 1
= 2x² – 24x + 72 + 5x – 31
= 2x² – 19x + 41
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Semoga Bermanfaat dan Berkah
Jangan Lupa Belajar Terus
Ingat Cita-Cita, Orang Tua, dan Keluarga
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