Page 21 - SITI MUTMAINAH TUGAS 1_Neat

MTKU – 3.6 / 4.6 / 2 / 1.1

Setelah kalian menuliskan penguasaanmu terhadap materi Komposisi Fungsi,
lanjutkan kegaitan berikut untuk mengevaluasi penguasaan kalian!.
Yuk Cek Penguasaanmu terhadap Materi Komposisi Fungsi!

Agar dapat dipastikan bahwa kalian telah menguasi materi Komposisi Fungsi,
maka kerjakan soal berikut secara mandiri di buku kerja kalian masing-masing.

3x  5
1. Diketahui fungsi   x  , x  , dan   x  x  2 . Tentukan
g
f
2
x  2
a. (f o g)(x)
b. (g o f)(x)
c. (f o g)(1)
d. (g o f)(x) = - 2
2
2. Diketahui fungsi g(x) = x – 1 , h(x) = 2x – 3 dan f(x) = x + 3x – 1,
tentukanlah :
a. (f o h o g) (x)
b. (f o h o g) (2)
3. Selesaikan soal-soal berikut ini :
a. Diketahui (fog)(x) = 2x 2 – 4x + 3 dan f(x) = 2x + 7, Tentukan
rumus g(x)
2
b. Diketahui (fog)(x) = x – 4x – 7 dan g(x) = x + 2, Tentukan nilai
dari f(2)
2
c. Diketahui (f o g)(x) = x – 5x + 5 dan g(x) = x – 3, Tentukan rumus
f(x + 1)

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