Question

Determinant Properties Questions
(Questions posted as Jpeg)

Answer 1

only need help with C and D

Answer 2

C is negative. Consider this random matrix:
\[
\textbf{A}=\begin{bmatrix}
2+3i&10-9i\\
1+5i&4-6i
\end{bmatrix}\\
\det(i\textbf{A})=29+41i\text{ while }i\det(\textbf{A})=41-29i
\]

Answer 3

thank you :D