dik (fog) (x) =9x²-6x+12 dan f(x)=3x-3. tentukan g(2)
Matematika
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Pertanyaan
dik (fog) (x) =9x²-6x+12 dan f(x)=3x-3. tentukan g(2)
1 Jawaban
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1. Jawaban ahreumlim
(fog) (x) =9x²-6x+12
f(x)=3x-3
f(g(x)) = 9x² - 6x + 12
3(g(x)) - 3 = 9x² - 6x + 12
3g(x) = 9x² - 6x + 12 + 3
3g(x) = 9x² - 6x + 15
g(x) = 9x²/3 - 6x/3 + 15/3
g(x) = 3x² - 2x + 5
g(2)
= 3(2)² - 2(2) + 5
= 12 - 4 + 5
= 13