document.write( "Question 1099794: A and B are two square matrices of rank 2. If |-2AB|=48, |B|=2, what is |A|? \n" ); document.write( "

Algebra.Com's Answer #714282 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"abs%28-2AB%29=48\"$
\n" ); document.write( " $\"abs%28B%29=2\"$
\n" ); document.write( "You also know that,
\n" ); document.write( " $\"abs%28AB%29=abs%28A%29%2Aabs%28B%29\"$
\n" ); document.write( "and
\n" ); document.write( " $\"abs%28kA%29=k%5En%2Aabs%28A%29\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"abs%28AB%29=12\"$
\n" ); document.write( "and
\n" ); document.write( " $\"abs%28A%29=abs%28AB%29%2Fabs%28B%29\"$
\n" ); document.write( " $\"abs%28A%29=12%2F2\"$
\n" ); document.write( " $\"abs%28A%29=6\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );