Matematika

Pertanyaan

Diketahui f : x ➡ x^2 - 1. Jika domain f adalah D = {x | < x < 4, x € bilangan bulat}, daerah hasil f adalah....
a. {-1, 0, 1, 8, 15}
b. {-1, 0, 3, 8, 15}
c. {-1, 0, 3, 5, 15}
d. {-1, 0, 5, 8, 15}

1 Jawaban

  • f(x) = x² - 1
    D = {xI 0 ≤ x ≤ 4, x ∈ bil.bulat}
    D = {0, 1, 2, 3, 4}

    f(0) = 0² - 1 = 0 - 1 = -1
    f(1) = 1² - 1 = 1 - 1 = 0
    f(2) = 2² - 1 = 4 - 1 = 3
    f(3) = 3² - 1 = 9 - 1 = 8
    f(4) = 4² - 1 = 16 - 1 = 15

    daerah hasil = {-1, 0, 3, 8, 15}

    jawaban B

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