Jika f(x²+1) =3x²-2 maka f(3) =
Matematika
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Pertanyaan
Jika f(x²+1) =3x²-2 maka f(3) =
1 Jawaban
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1. Jawaban Anonyme
f (x² + 1) = 3x² - 2
f (x² + 1) = f (3)
x² + 1 = 3
x² = 3 - 1
x² = 2
x = √2
f (3) = 3x² - 2
f (3) = 3 (√2)² - 2
f (3) = 3 (2) - 2
f (3) = 6 - 2
f (3) = 4