Matematika

Pertanyaan

Diket matriks A=[2 1] dan B=[8 -4]
-4 3. 5 3
Nilai det B-2A

1 Jawaban

  • matriks
    a b
    [2 1 ] [8 -4]
    [-4 3] [ 5 3]

    det
    a = (2.3)-(1.-4) b = (8.3)-(-4.5)
    a = 6-(-4) b = 24-(-20)
    a = 10 b = 44

    nilai det B-2a
    = 44-2(20)
    = 44-40
    = 4

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