document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1112690>Question 1112690</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For the matrix A =      <BR>\n" );
document.write( "(-6 3  9)<BR>\n" );
document.write( "( 3 6 -2)<BR>\n" );
document.write( "( 5 1  4)<BR>\n" );
document.write( "a.   Find the determinant of the matrix AT (Transpose). <BR>\n" );
document.write( "b.   Find the matrix of cofactors. <BR>\n" );
document.write( "c.    Hence,find A-1(Inverse). <BR>\n" );
document.write( "d.  If B = <BR>\n" );
document.write( "(-2 1  3)<BR>\n" );
document.write( "( 3 6 -2)<BR>\n" );
document.write( "( 5 1  4)<BR>\n" );
document.write( " find |B|. <BR>\n" );
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document.write( "  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #727752 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52814)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=727752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "See the lessons\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Matrices-and-determiminant/Determinant-of-a-3x3-matrix.lesson>Determinant of a 3x3 matrix</A> \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=http://www.algebra.com/algebra/homework/Matrices-and-determiminant/Co-factoring-a-3x3-determinant.lesson>Co-factoring the determinant of a 3x3 matrix</A> \r<BR>\n" );
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document.write( "in this site.\r<BR>\n" );
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document.write( "Also, &nbsp;you have this free of charge online textbook in ALGEBRA-II in this site\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;- <A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson>ALGEBRA-II - YOUR ONLINE TEXTBOOK</A>.\r<BR>\n" );
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document.write( "The referred lessons are the part of this online textbook under the topic <BR>\n" );
document.write( "&nbsp;&nbsp;&nbsp;&nbsp; \"<U>3x3-Matrices, determinants, Cramer's rule for systems in three unknowns</U>\" \r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );