Matematika

Pertanyaan

Dik. : f(x) = 2ax + 3b
f(2) = 17
f(5) = 29

Dit. : Tentukan!
a = ....?
b = ....?
f(x) = ....?



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1 Jawaban

  • f(x) = ax + b
    f(2) = 2a + b = 17
    f(5) = 5a + b = 29
    ---------------------------(-)
    - 3a = - 12
    a = 4

    2a + b = 17
    2(4) + b = 17
    8 + b = 17
    b = 17 - 8
    b = 9

    f(x) = 4x + 9

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