141. Diketahui 𝑓(𝑥) = 𝑥^2 − 4 dan g(𝑥) = (1 − 2𝑥)/ (𝑥 + 1) . Tentukan hasil operasi (𝑓/𝑔)(−2) !
a. -5
b. -1
c. 0
d. 1
e. 5
Jawaban :
𝑓(𝑥) = 𝑥^2 − 4
g(𝑥) = (1 − 2𝑥)/ (𝑥 + 1)
(𝑓/𝑔)(−2) = f(-2) / g(- 2)
maka hitung dulu f(- 2) dan g(-2)
𝑓(𝑥) = 𝑥^2 − 4
f(-2) = (-2)^2 - 4
f (-2) = 4 - 4
f (-2) = 0
g(𝑥) = (1 − 2𝑥)/ (𝑥 + 1)
g(- 2) = (1 - 2(-2)) / ((-2) + 1)
g(-2) = (1 + 4) / (-1)
g(-2) = 5 / (-1)
g(- 2) = - 5
(𝑓/𝑔)(−2) = f(-2) / g(- 2)
(𝑓/𝑔)(−2) = 0 / (-5)
(𝑓/𝑔)(−2) = 0
Jawaban : C
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