Matematika

Pertanyaan

Jika f(x²+1) =3x²-2 maka f(3) =

1 Jawaban

  • 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

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