147. Diketahui 𝑓(𝑥) = 𝑥^2 + 2𝑥 − 3 dan g(𝑥) = 𝑥 + 1 , tentukan (𝑓 ∘ 𝑔)(−4) !
a. -22
b. 3
c. 12
d. 0
e. -13
Jawaban :
𝑓(𝑥) = 𝑥^2 + 2𝑥 − 3
g(𝑥) = 𝑥 + 1
g (- 4) = - 4 + 1
g (4) = - 3
(𝑓 ∘ 𝑔)(−4)
= f (g(-4))
= f (-3)
= (-3)^2 + 2 (-3) - 3
= 9 - 6 - 3
= 9 - 9
= 0
(𝑓 ∘ 𝑔)(−4) = 0
Jawaban : D
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