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Penyelesaian:Dik:
Nilai 2xy...?
Jawab
P . M^T = R
. =
Lakukan perkalian matriks, didapat:
-22y = 66
y = -3
12x + 8y = 96
12x + 8(-3) = 96
12x = 120
x = 10
Nilai 2xy = 2(10)(-3) = -60 (A).