Matematika

Pertanyaan

fungsi kuadrat y=ax²-5x-3 memotong sumbu x di titik -1/2,0.nilai a adalah?

1 Jawaban

  • FUNGSI KUADRAT

    titik (-1/2 , 0)
    => x = -1/2 ; y = 0

    0 = a×(-1/2)^2 - 5×(-1/2) - 3
    0 = 1/4 a + 5/2 - 3
    0 = 1/4 a + 5/2 - 6/2
    0 = 1/4 a - 1/2
    -1/4 a = -1/2
    a = -1/2 × (-4/1)
    a = 4/2
    a = 1

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