Question

1- Calcule os determinantes:

Answer 1

Caso esteja pelo app, e tenha problemas para visualizar esta resposta, experimente abrir pelo navegador https://brainly.com.br/tarefa/35242867

                                                                                                                            $\tt a)~\sf A= \begin{bmatrix}\sf8\end{bmatrix}\\\huge\boxed{\boxed{\boxed{\boxed{\sf det~A=8\checkmark}}}} \\\tt b)~\sf B=\begin{bmatrix}\sf 3&\sf-4\\\sf1&~~\sf2\end{bmatrix}\\\sf det~B=3\cdot2-1\cdot(-4)\\\sf det~B=6+4\\\huge\boxed{\boxed{\boxed{\boxed{\sf det~B=10\checkmark}}}}$

$\tt c)~\sf C=\begin{bmatrix}\sf2&\sf-3\\\sf5&\sf6\end{bmatrix}\\\sf det~C=2\cdot6-5\cdot(-3)\\\sf det~C=12+15\\\huge\boxed{\boxed{\boxed{\boxed{\sf det~C=27\checkmark}}}}\\\tt d)~\sf D=\begin{bmatrix}\sf-5&~\sf2\\~~\sf3&\sf-1\end{bmatrix}\\\sf det~D=(-5)\cdot(-1)-3\cdot2\\\sf det~D=5-6\\\huge\boxed{\boxed{\boxed{\boxed{\sf det~D=-1\checkmark}}}}$

$\tt e)~\sf E=\begin{bmatrix}\sf6&\sf-4\\\sf2&~~\sf3\end{bmatrix}\\\sf det~E=6\cdot3-2\cdot(-4)\\\sf det~E=18+8\\\huge\boxed{\boxed{\boxed{\boxed{\sf det~E=26\checkmark}}}}$