jika f(x) = 2x-7 dan g(x)=x^2. Maka (gof)(2) sama dengan
Matematika
Falcongege
Pertanyaan
jika f(x) = 2x-7 dan g(x)=x^2. Maka (gof)(2) sama dengan
1 Jawaban
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1. Jawaban nofitarachma
f(x) = 2x-7
g(x) = x²
(gof)(x) = (2x-7)²
= (2x-7)(2x-7)
= 4x²-28x+49
(gof)(2) = 4(2)²+28(2)+49
= 4(4)-56+49
= 9