jika f(x)=5x+1 dan g (x-1)=x^2 maka (fog)(2)=...
Matematika
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Pertanyaan
jika f(x)=5x+1 dan g (x-1)=x^2 maka (fog)(2)=...
1 Jawaban
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1. Jawaban ShabrinaSu
g(x) = (x-1)^2
(fog) = g(x) dimasukin ke f(x)
= 5(x-1)^2+1
= 5(x^2-2x+1)+1
=5x^2-10x+5+1
=5x^2-10x+6
(fog)(2) = 5(2)^2-10(2)+6
=6