Question

1. Jika f(x) = 3x + 1 dan g(x) = ² + 1 . Tentukan nilai (f o g) (-2)
2. Jika f(x) = 6x - 3 dan g(x) = 5x + 4 dan (f o g)(a) = 4 . Tentukan harga a

Please help yaa :) ini tugas buat syarat ikut UUB

Answer 1

1) f(x) = 3x + 1 dan g(x) = x² + 1 .
(f o g) (-2) = f(5) = 3(5) + 1 = 16

2) (f o g)(a) = 4
f(5a + 4) = 4
6(5a + 4) = 4
30a + 24 = 4
30a = -20
a = -2/3

Answer 2

1.(fog)(x) =3 +2
 sehingga , Fog(-2) = 3(-2)pangkat2 +2
= 14
2. f og (a) = 6(5x+4)-3 = 30 x -21
 30a-21 =4
30a = 25
a = 25/30 = 5/6