Questão 858897

det \(\begin{pmatrix} a&b \\ c&d \end{pmatrix}\)

det \(\begin{pmatrix} a&c \\ a+c&b+d \end{pmatrix}\)

\(\frac{1}{2}\) det \(\begin{pmatrix} a&b \\ c&d \end{pmatrix}\)

\(\frac{1}{2}\) det \(\begin{pmatrix} a&c \\ a+c&b+d \end{pmatrix}\)

\(\frac{1}{2}\) det \(\begin{pmatrix} a&b&1 \\ c&d&1 \\ a+c&c+d&1 \end{pmatrix}\)