Question

calcule os determinantes a seguir [2 3 -5/ 1 2 0/ 4 -1 6]
b: [3 1 2/ 4 -3 1/ -1 6 5]

Answer 1

$\left[\begin{array}{ccc}2&3&- 5\\1&2&0\\4&-1&6\end{array}\right]$

2  3  -5  2  3

1   2   0   1   2

4  -1   6   4 -1

(2 x 2 x 6) + (3 x 0 x 4) + (-5 x 1 x (-1)) - (3 x 1 x 6) - (2 x 0 x (-1)) - ((-5) x 2 x 4)

24 + 0 + 5 + 40 - 0 - 18

51

$\left[\begin{array}{ccc}3&1&2\\4&-3&1\\-1&6&5\end{array}\right]$

    3    1     2   3   1

   4   -3     1    4   -3

   -1   6     5   -1    6

(3 x (-3) x 5) + ( 1 x 1 x (-1)) + (2 x 4 x 6) - (2 x (-3) x (-1)) - (3 x 6 x 1) - (1 x 4 x 5)

- 15 - 1 + 48 - 6 - 18 -20

- 12