Question

Calcule o determinante das matrizes:
|-3 0|
|4 -8|

Answer 1

$\begin{vmatrix} - 3 \searrow \: \: \: \: \:  \swarrow0 \\ 4\nearrow \: \: \: \: \: \nwarrow-8\end{vmatrix} \\ \\ - 3 \times ( - 8) - 0 \times 4 \\ 24 - 0 \\ 24 \\ \\ \begin{vmatrix} - 3 \: \: \: \: \: 0 \\ 4 \: \: \: \: \: - 8\end{vmatrix} = 24$

Answer 2

Resposta:

$\left[\begin{array}{ccc}{ - 3}&{0}\\{4}&{ - 8}\\\end{array}\right] = 24$

Explicação passo-a-passo:

$\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } \: \: \mathsf {OI, TUDO \: \: J\acute{O}IA \: ? \: \:\blue {{ _{\heartsuit} } \heartsuit_{\heartsuit} } }$

$\left[\begin{array}{ccc}{ - 3}&{0}\\{4}&{ - 8}\\\end{array}\right] \Longrightarrow \sf{ - 3 \cdot ( - 8) - 0 \cdot4 = \red{ \sf{24}}} \\ \\ \sf{ - 3 \cdot( - 8) -0\cdot4} \\ \sf{ - 3\cdot( - 8) - 0} \\ \sf{ 24 - 0} \\ \red{ \boxed{ \green{ \boxed{ \pink{ \boxed{ \sf{ 24}} }} } } }$