Diketahui Mateik A = ( 3 2 2 -1 ) tentukan invers matrik A
Matematika
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Pertanyaan
Diketahui Mateik A = ( 3 2 2 -1 ) tentukan invers matrik A
1 Jawaban
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1. Jawaban Anonyme
jawab
A= [3..2..2..-1]
det A = 3(-1) - 2(2)= -3 - 4 = - 7
A⁻¹ = - 1/7 [-1...-2...-2....3]
A⁻¹ = [1/7...2/7...2/7....-3/7]