Matematika

Pertanyaan

jika (f○g)(x) = x² - 4x + 3 dan f(x) = x - 2 adalah..
a. g(x)=x²- 4x + 1
b. g(x)=x² - 4x + 6
c. g(x)=x² - 4x - 5
d. g(x)=x² - 4x + 5
e. g(x) =x² - 4x

tolong sama crnya ya,, trimz

1 Jawaban

  • (fog)(x) = f(g(x))
    f(x) = x - 2
    f(g(x)) = g(x) - 2

    x² - 4x + 3 = f(g(x))
    x² - 4x + 3 = g(x) - 2
    g(x) = x² - 4x + 5 (D.)

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