Matematika

Pertanyaan

f(x)=x+3
(gof)(x)=2x^2+4x-3

maka (fog)(1)=...

1 Jawaban

  • KOMPOSISI FUNGSI

    g(f(x)) = 2x^2 + 4x - 3
    g(x+3) = 2x^2 + 4x - 3
    g(-2+3) = 2×(-2)^2 + 4×(-2) - 3
    g(1) = 8 - 8 - 3
    g(1) = -3

    f○g(1) = f(g(1)) = f(-3) = -3+3 = 0

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