diketahui matriks p=[3 4 5 8] dan Q=[0 2 -6 1 ] jika R=P-Q tentukan invers matriks R
Matematika
hafizalensky
Pertanyaan
diketahui matriks p=[3 4 5 8] dan Q=[0 2 -6 1 ] jika R=P-Q tentukan invers matriks R
1 Jawaban
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1. Jawaban nunikeka
R=P-Q
R= [3 4]-[0 2]
[5 8] [-6 1]
=[3-0 4-2]
[5-6 8-1]
=[3 2]
[-1 7]
R invers= 1/ad-bc [d -b]
[-c a]
=1/3.7-2.(-1) [7 -2]
[-(-1) 3]
=1/21+2 [7 -2]
[1 3]
=1/23 [7 -2]
[1 3]
=[7/23 -2/23]
[1/23 3/23]
ini klo gk salah...