fog(x)=3x-5 f(x)=3x+1 tentukan a. g(x) b.gof(x)

Question

Matematika Diposting : 2014-10-23 Diupdate : 2021-06-09 andanis55

Pertanyaan

fog(x)=3x-5
f(x)=3x+1
tentukan
a. g(x)
b.gof(x)

Answer 1

(fog)(x) = 3x - 5
f(g(x)) = 3x - 5
3g(x) + 1 = 3x - 5
3g(x) = 3x - 6
g(x) = x - 2

(gof)(x) = g(f(x)) = (3x + 1) - 2 = 3x - 1