Matematika

Pertanyaan

(hofog)(2) f(x)=5x-3 g(x)=x-1 h(x) =2x'2+1

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  • Mapel Matematika
    Bab Komposisi Fungsi

    f(x)=5x-3 g(x)=x-1 h(x) =2x'2+1

    (hofog)(x) = (h(f(g(x)))
    = h(5(x-1) - 3)
    = h(5x - 5 - 3)
    = h(5x - 8)
    = 2(5x - 8)^2 + 1
    = 2(25x^2 - 80x + 64) + 1
    = 50x^2 - 160x + 128 + 1
    = 50x^2 - 160x + 129

    (hofog)(2) = 50(2)^2 - 160(2) + 129 = 200 - 320 + 129 = 9

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