diketahui persamaan matriks [x-5 4] [4 -1] = [0 2] [-5 2] [2 y-1] [-16 5] Perbandingan nilai x dan y adalah??
Matematika
Vara02
Pertanyaan
diketahui persamaan matriks
[x-5 4] [4 -1] = [0 2]
[-5 2] [2 y-1] [-16 5]
Perbandingan nilai x dan y adalah??
[x-5 4] [4 -1] = [0 2]
[-5 2] [2 y-1] [-16 5]
Perbandingan nilai x dan y adalah??
1 Jawaban
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1. Jawaban Ridwan0709
[x-5 4] [4 -1] = [0 2]
[-5 2] [2 y-1] [-16 5]
ingat ya perkalian matriks baris x kolom
[(x-5.4) + (4.2)] [(x-5.-1) + (4.y-1)] = [0 2]
[(-5.4) + (2.2)] [(-5.-1) + (2.y-1)] [-16 5]
[(x-5.4) + (8)] [(x-5.-1) + (4.y-1)] = [0 2]
[(-20) + (4) ] [(5) + (2.y-1) ] [-16 5]
Misal : x = 3, dan y = 1
[(3-5.4) + (8)] [(3-5.-1) + (4.1-1)] = [0 2]
[(-20) + (4) ] [(5) + (2.1-1) ] [-16 5]
[(-2.4) + (8)] [(-2.-1) + (4.0)] = [0 2]
[(-20) + (4) ] [(5) + (2.0) ] [-16 5]
[(-8) + (8) ] [(2) + (0)] = [0 2]
[(-20) + (4)] [(5) + (0) ] [-16 5]
[0 2] jadi x = 3
[-16 5] dan y = 1