Kisi Kisi PAT Matematika Kelas XI no 25

25. Jika 𝑓(𝑥) = 3𝑥 + 1 dan 𝑔(𝑥) = 2𝑥 − 3, maka (𝑔 𝑜 𝑓)(𝑥)=...

A. 6𝑥 − 1

B. 6𝑥 + 1

C. 6𝑥 − 8

D. 8𝑥 − 6

E. 8𝑥 + 6

Jawaban :

𝑓(𝑥) = 3𝑥 + 1

𝑔(𝑥) = 2𝑥 − 3

(𝑔 𝑜 𝑓)(𝑥) = g (f (x))

(𝑔 𝑜 𝑓)(𝑥) = g (3x + 1)

(𝑔 𝑜 𝑓)(𝑥) = 2(3x + 1) - 3

(𝑔 𝑜 𝑓)(𝑥) = 6x + 2 - 3

(𝑔 𝑜 𝑓)(𝑥) = 6x - 1

Jawaban : A