Matematika

Pertanyaan

diketahui a=(-3,2),b=(6,9),c=(-2,-1),berapakah a-b+2c...

2 Jawaban

  • a-b+2c=
    (-3,2)-(6,9)+2(-2,1)=
    (-3,2)-(6,9)+(-4,-2)=
    (-13,-9)

    JADIKAN YG TERBAIK YAAAAAAAAAAA
  • Mapel : Matematika
    Kelas : X SMA
    Bab : Vektor

    Pembahasan :
    a = [-3 2]
    b = [6 9]
    c = [-2 -1]

    Substitusi ke ↓↓↓
    a - b + 2c
    = [-3 2] - [6 9] + 2[-2 -1]
    = [-3 2] - [6 9] + [-4 -2]
    = [-13 -9]
    = -13i - 9j

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