Diketahui fungsi F(x)=2x+3 dan g(x)=x2+x-2. Nilai dark (g o f)(4)
Matematika
muhammadkamiluddin
Pertanyaan
Diketahui fungsi F(x)=2x+3 dan g(x)=x2+x-2. Nilai dark (g o f)(4)
1 Jawaban
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1. Jawaban alifiandirm
(g o f)(x) = g(f(x)) = (2x + 3)² + (2x + 3) - 2
= 4x² + 12x + 9 + 2x + 3 - 2
= 4x² + 14x + 10
(g o f)(4) = 4×16 + 14×4 + 10
= 64 + 56 + 10 = 130