misal f(x) = |x-2| dan g(x) = √x-4, maka (gof)(-3) =.... a. 0 b. 1 c. tidak terdedifinisi d. +- 1 e. +- 2 (pakai cara)

Fungsi Komposisi
Kelas X

f(x) = |x - 2|
[tex] g(x) = \sqrt{x-4} [/tex]

f(-3) = |-3 - 2|
f(-3) = |-5|
f(-3) = 5

Maka
(g o f)(-3) = g(f(-3))
= g(5)
[tex] = \sqrt{5 - 4} \\
= \sqrt{1} [/tex]
= ± 1 [D]