Contoh soal 1:
Jika f(x) = 2x + 3 dan (f o g) = 2x2 + 6x –
7, maka g(x) = …
Penyelesaian :
(f o g)(x) = 2x2 + 6x –
7
f(g(x)) = 2x2 + 6x –
7
2(g(x)) + 3 = 2x2 + 6x –
7
2 (g(x)) = 2x2 + 6x – 4
jadi g(x) = x2 + 3x – 2
Contoh soal 2 :
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Contoh soal 1:
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