tolong dijawab mohon bantuannya
Matematika
Xlm
Pertanyaan
tolong dijawab mohon bantuannya
1 Jawaban
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1. Jawaban Anonyme
jawab
a) det A = 4(11) - 5(9) = 44 - 45 = -1
b) det A = det A⁻¹
det (A⁻¹.B) = det A⁻¹. det B
=(-1) (-3(5) - 3(6))
= (-1)(-15 -18)
= (-1)(-33)
= 33