Network
Jawaban :
y = 3x – 1 / x – 5
xy – 5y = 3x – 1
xy – 3x = 5y – 1
x (y – 3) = 5y – 1
x = 5y – 1/ y-3
= 5(4) -1/4 -3
= 19/1
= 19
6. Jika f(x) = 2/3 x – 6
g (x) = 2x + ½
maka (fog) (x) =…
jawaban :
f (g (x))
f (4x +1/2)
2/3(4x + 1/2 ) – 6
4x + 1 – 18 /3
4x – 17/3
7. f(x) = 3x – 1
g(x) = 2x + a
jika (fog) (-2) = 2
maka a² + 2a + 1=…
jawaban :
f (g(-2)) = 2
f (-4 + a) = 2
3 (-4+a) -1 = 2
3 (-4 +a) = 3
-4 + a = 1
a = 5
masukan ke pertanyaan soal :
a² + 2a + 1 =
5² + 2(5) + 1
25 + 10 + 1
36
8. jika f(x) = 3x + 1
g(x) = 2x – 3
maka (fog) (x) =…
