Jika f (x)= x2+3x-2 dan g (x)= 2x+3 nilai (fog) (-2)=
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Pertanyaan
Jika f (x)= x2+3x-2 dan g (x)= 2x+3 nilai (fog) (-2)=
1 Jawaban
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1. Jawaban andhikahanif
diketahui
f(x) = x² + 3x - 2
g(x) = 2x + 3
menentukan nilai (fog) (-2)
(fog) (-2) = f(g(-2))
(fog) (-2) = f(2(-2) + 3)
(fog) (-2) = f(-4 + 3)
(fog) (-2) = f(-1)
(fog) (-2) = (-1)² + 3(-1) - 2
(fog) (-2) = 1 - 3 - 2
(fog) (-2) = -4