f(×)=2×-7 g(×)=10-× ditanya fog(×) dan gof(×)

Bab Fungsi Komposisi
Matematika SMA Kelas X

(fog) (x) = f(10 - x)
(fog) (x) = 2 (10 - x) - 7
(fog) (x) = 20 - 2x - 7
(fog) (x) = 13 - 2x

(gof) (x) = g (2x - 7)
(gof) (x) = 10 - 2x + 7
(gof) (x) = 17 - 2x

f(x) = 2x - 7
g(x) = 10 - x

(fog)(x) = f{g(x)}
= 2g(x) - 7
= 2(10 - x) - 7
= 20 - 2x - 7
= 13 - 2x

(gof)(x) = g{f(x)}
= 10 - f(x)
= 10 - (2x - 7)
= 10 - 2x + 7
= 17 - 2x

Semoga berguna +_+