- #1
Hernaner28
- 263
- 0
Hi. I have the following sentence:
[tex]\begin{array}{l}
A,B \in {M_{nxn}}\\
A \ne 0\\
B \ne 0\\
{\rm{if }}AB = 0{\rm{ then}}\\
{\rm{|A| = 0 or |B| = 0}}
\end{array}[/tex]
I know this is true but how can I realize? Just thinking about an example?
Thanks!
[tex]\begin{array}{l}
A,B \in {M_{nxn}}\\
A \ne 0\\
B \ne 0\\
{\rm{if }}AB = 0{\rm{ then}}\\
{\rm{|A| = 0 or |B| = 0}}
\end{array}[/tex]
I know this is true but how can I realize? Just thinking about an example?
Thanks!