dik g(x)=x2+x+2 dan (fog)(x)=2x2+2x+5, maka f(2)
Matematika
antonisiaga
Pertanyaan
dik g(x)=x2+x+2 dan (fog)(x)=2x2+2x+5, maka f(2)
1 Jawaban
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1. Jawaban Anonyme
jawab
g(x) = x² + x + 2
fog(x) = 2x² + 2x + 5
f(x² + x + 2) = 2x² + 2x + 5
2(x² + x+ 2) + 1 = 2x² + 2x + 5
f(x)= 2x + 1
f(2) = 2(2) + 1
f(2)= 5