Diket fungsi f (3x+4) = 12x+21. Nilai f (x) adalah... A. f (x) = 4x-5 B. f (x) = 4x+5 C. f (x) = 4x D. f (x) = -4x-5

Question

Matematika Diposting : 2018-03-20 Diupdate : 2021-11-18 Chichayy1

Pertanyaan

Diket fungsi f (3x+4) = 12x+21.
Nilai f (x) adalah...

A. f (x) = 4x-5
B. f (x) = 4x+5
C. f (x) = 4x
D. f (x) = -4x-5

Answer 1

Kelas 10 Matematika
Bab Fungsi Komposisi

f(3x + 4) = 12x + 21
f(3x + 4) = 4 (3x + 4) + 5
f(x) = 4x + 5

Answer 2

f (3x + 4) = 12x + 21
f (3x + 4) = 4 (3x + 4) + 5
f (3x + 4) = 4x + 5 ✔️

Semoga bermanfaat....
-Prisco