DETERMINANTES 3X3 - REGLA DE SARRUS
a b c
d e f = ( aei + bfg + dhc ) − ( ceg + bdi + fha )
g h i
2 -1 3
1 4 2 = [2·4·1 + (-1)·2·3 + 1·(-1)·3 ] - [3·4·3 + (-1)·1·1 + 2·(-1)·2 ] = (8 - 6 - 3) - (36 -1 - 4) = (-1) - (31) = -32
3 -1 1
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a b c
d e f = ( aei + bfg + dhc ) − ( ceg + bdi + fha )
g h i
2 -1 3
1 4 2 = [2·4·1 + (-1)·2·3 + 1·(-1)·3 ] - [3·4·3 + (-1)·1·1 + 2·(-1)·2 ] = (8 - 6 - 3) - (36 -1 - 4) = (-1) - (31) = -32
3 -1 1
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