Page 40 - Praktikum Media Pembelajaran Flip PDF_Arif Kurniawan Siahaan

1 2 3

Contoh Soal : Tentukan kofaktor dari : = 2 3 2
−1 2 2
Jawab :

3 2
2
M = = 6 – 4 = 2, maka a = (-1) 1+1 M = (-1) (2) = 2
11
2 2 11 11
2 2
3
M = −1 2 = 4 – (-2) = 6, maka a = (-1) 1+2 M = (-1) (6) = -6
12
12
12
2 3
M = −1 2 = 4 – (- 3) = 7, maka a = (-1) 1+3 M = (-1) (7) = 7
4
13
13
13
2 3
3
M = 2 2 = 4 – 6 = -2, maka a = (-1) 2+1 M = (-1) (-2) = 2
21
21
21
1 3
4
M = = 2 – (-3) = 5, maka a = (-1) 2+2 M = (-1) (5) = 5
22
22
22
−1 2
1 2
5
M = = 2 – (-2) = 4, maka a = (-1) 2+3 M = (-1) (4) = -4
23
23
23
−1 2