jika f(x)=2x-3 dan gof(x)=2x+1, maka g(x) adalah...?
Matematika
dwikurniawati
Pertanyaan
jika f(x)=2x-3 dan gof(x)=2x+1, maka g(x) adalah...?
1 Jawaban
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1. Jawaban BaercelonaFc
f(x) = 2x - 3 dan (gof)(x) = 2x + 1
(gof)(x) = g (f(x))
2x + 1 = g (f(x))
g (f(x)) = 2x + 1
g(x) = 2(2x - 3) + 1
g(x) = 4x - 6 + 1
g(x) = 4x - 5
g(x) = 4(2) - 5
g(x) = 8 - 5
g(x) = 3