document.write( "Question 37509This question is from textbook College Algebra
\n" ); document.write( ": Find det A, given A = [-1 0 1
\n" ); document.write( " 2-1 3
\n" ); document.write( " 0 1 5] \n" ); document.write( "

Algebra.Com's Answer #23118 by fractalier(6550) $\"\"$ $\"About$

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This one is not easy to show here, but we can do it by the reduction-by-minors technique:
\n" ); document.write( "(-1) times the rows and columns not including the -1 MINUS
\n" ); document.write( "(0) times the rows and columns not including the 0 PLUS
\n" ); document.write( "(1) times the rows and columns not including the 1
\n" ); document.write( "so we get
\n" ); document.write( "(-1)(-5 - 3) - 0 + 1(2 - 0) =
\n" ); document.write( "8 - 0 + 2 =
\n" ); document.write( "10 \n" ); document.write( "

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