Question

alternatia
3
4
1
0
2

Answer 1

$A=(Aij)3.3~~~~~~aij = \left \{ {{1 ~~se~~ i =j} \atop {0~~se~~i \neq j}} \right. ,~~Det(a)?$

$A = \left[\begin{array}{ccc}a11&a12&a13\\a21&a22&a23\\a31&a32&a33\end{array}\right] = \left[\begin{array}{ccc}1&0&0\\0&1&0\\0&0&1\end{array}\right] = Matriz ~~identidade$     $Det(a) = 1$

$\boxed{Numa~~matriz ~~identidade~~o~~determinante ~~sempre~~sera\´~~1 }$

Answer 2

Resposta:

A alternativa correspondente a conta sera a da resposta número 1