f(x)= 2x-1/3x+4 dan g(x) x+5 berapa fog(1) gof(-1)
Matematika
Thiizae1
Pertanyaan
f(x)= 2x-1/3x+4 dan g(x) x+5 berapa fog(1) gof(-1)
1 Jawaban
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1. Jawaban dharmawan14
f(x) = (2x-1)/(3x+4) dan g(x) = x + 5
fog(1) = f {g(1) }
= f (1+5)
= f (6)
= (2.6 -1)/(3.6+4)
= (12-1)/(18+4)
= 11/22
= 1/2
gof (-1) = g { f (-1) }
g { (2.-1 - 1)/(3.-1 + 4)
g { (-2 - 1)/(-3 +4)
g (-3/1)
g (-3)
= -3 + 5
= 2