Tentukan determinan matriks P = [ 1 -2 3 ]
[ -4 -1 2 ] !
[ 2 1 1 ]
Matriks
determinan
| 1 -2 3|
|-4 -1 2| = P
| 2 1 1|
determinan P, |P|
= 1(-1.1 – 2.1) – (-2)(-4.1 – 2.2) + 3(-4.1 – (-1).2)
= -3 + 2(-8) + 3(-2)
= -25
Matriks
determinan
| 1 -2 3|
|-4 -1 2| = P
| 2 1 1|
determinan P, |P|
= 1(-1.1 – 2.1) – (-2)(-4.1 – 2.2) + 3(-4.1 – (-1).2)
= -3 + 2(-8) + 3(-2)
= -25