Question

Assinale a alternativa que representa a matriz A quadrada de ordem 2, sendo aij= 2i- j:

A $\left[\begin{array}{ccc}1&2\\2&5\end{array}\right]$
B $</span>  \left[\begin{array}{ccc}3&2\\4&5\end{array}\right] <span>$
C $</span>  \left[\begin{array}{ccc}-1&3\\4&4\end{array}\right]$ 
D  $</span>\left[\begin{array}{ccc}1&0\\3&2\end{array}\right] <span>$
E  $</span>\left[\begin{array}{ccc}1&-3\\4&0\end{array}\right]<span>$

Answer 1

Letra d);
$a11=2.1-1 \\ a11=1$

$a12=2.1-2 \\ a12=0$

$a21=2.2-1 \\ a21=3$

$a22=2.2-2 \\ a22=2$