calcule os determinantes
a-) |2 3 1|
|1 4 5|
|2 -2 3|
b-) |8 1 0|
|-3 4 5|
|1 2 3|
c-) |-2 0 2|
|3 1 4|
|-5 6 -3|
d-) |1 2 -3|
|2 4 5|
|1 2 4|
a-) |2 3 1|
|1 4 5|
|2 -2 3|
b-) |8 1 0|
|-3 4 5|
|1 2 3|
c-) |-2 0 2|
|3 1 4|
|-5 6 -3|
d-) |1 2 -3|
|2 4 5|
|1 2 4|
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Verified answer
a-) |2 3 1|
|1 4 5|
|2 -2 3|
= 2 * 4 * 3 + 3 * 5 * 2 + 1 * 1 * (-2) - 2 * 4 * 1 - 3 * 1 * 3 - 1 * 5 * 2
= 24 + 30 - 2 - 8 - 9 - 10
= 25
b-) |8 1 0|
|-3 4 5|
|1 2 3|
= 8 * 4 * 3 + 1 * 5 * 1 + 0 * 2 * (-3) - 0 * 4 * 1 - 1 * 3 * 3 - 8 * 2 * 5
= 96 + 5 + 0 - 0 - 9 - 80
= 12
c-) |-2 0 2|
|3 1 4|
|-5 6 -3|
= (-2) * 1 * (-3) + 0 * 4 * (-5) + 2 * 3 * 6 - 2 * 1 * 4 - 0 * 3 * (-3) - (-2) * 6 * 3
= 6 + 0 + 36 - 8 + 0 + 36
= 70
d-) |1 2 -3|
|2 4 5|
|1 2 4|
= 1 * 4 * 4 + 2 * 5 * 1 + (-3) * 2 * 2 - (-3) * 4 * 1 - 5 * 2 * 1 - 1 * 2 * 4
= 16 + 10 - 12 + 12 - 10 - 8
= 8