Dik: F(x) = x² - 1 G(x) = x + 2 Dit: a.fog. c.(fog)(3) b.gof. d.(gof)(3)

Mapel : Matematika

Kelas : 10

Bab : Relasi dan Fungsi
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Bagian a]
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(f o g) (x) = f(x + 2)
(f o g) (x) = (x + 2)² - 1)
(f o g) (x) = x² + 4x + 3


Bagian b]
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(f o g) (3) = 3² + 4(3) + 3
(f o g) (3) = 9 + 12 + 3
(f o g) (3) = 24


Bagian c]

(g o f) (x) = g(x² - 1)
(g o f) (x) = (x² - 1) + 2
(g o f) (x) = x² + 1