Jika diberikan f (x)= (2x-3) dan g (x)= x^2 tentukanlah A) (FoG)(x) B) (FoG)^-1 (2)
Matematika
Salsaam11
Pertanyaan
Jika diberikan f (x)= (2x-3) dan g (x)= x^2 tentukanlah
A) (FoG)(x)
B) (FoG)^-1 (2)
A) (FoG)(x)
B) (FoG)^-1 (2)
1 Jawaban
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1. Jawaban Anonyme
jawab
f(x) = 2x - 3
g(x) = x²
fog(x)= 2x² - 3
(fog)⁻¹(2x² -3)= x
(fog)⁻¹(2) =
2x² - 3 = 2
2x² = 5
x² = 5/2
x = √(5/2)
x= 1/2 √10
(fog)⁻¹(2) = 1/2 √10