Kuis :
f(x) = 4x-8
g(x) = x²+4x+4
(fog)(x) = 0
x = ....
f(x) = 4x-8
g(x) = x²+4x+4
(fog)(x) = 0
x = ....
Komposisi dan Invers Fungsi
f(x) = 4x - 8
g(x) = x² + 4x + 4
g(x) = (x + 2)²
(fog)(x) = 0
4(x + 2)² - 8 = 0
(x + 2)² = 2
|x + 2| = √2
x = -2 + √2 atau x = -2 - √2
Jawaban:
diketahui
f(x) = 4x-8
g(x) = x²+4x+4
(fog)(x) = 0
ditanya
x
jawab
4(x + 2)² - 8 = 0
(x+2)² = 2
HP = { -2+√2atau -2 -√2}
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