Matematika

Pertanyaan

F(x)=3mx+5
Nilai f(2)=23
a. Tentukan nilai m
b. Rumus fungsi f
c. Nilai f(5)

1 Jawaban

  • a, f (x) = 3mx +5
    f (2) = 3m (2) +5 = 23
    6m +5 =23
    6m = 23 -5
    6m = 18
    m = 18/6
    m = 3
    nilai m = 3

    b. rumus fungsi = 3 (3) x +5
    f (x) = 9x + 5

    c. nilai f ( 5)
    = 9 (5) + 5
    = 45 +5
    = 50
    nilai f (5) = 50

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