Question

CALCULE O DETERMINANTE DA MATRIZ A.( -1 2 1 , U I 4 , -2 -3 5 )

Answer 1

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



- 5i - 16 - 3u - (-2i) -12 -10u = -13u - 3i - 28

Determinante = -13u - 3i - 28