document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117159>Question 1117159</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove that the product of any matrix and it's transpose is symmetric  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #732154 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=732154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (AB)^T=B^T A^T, then <BR>\n" );
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document.write( "(A^T A)^T = A^T(A^T)^T = A^T A and therefore<BR>\n" );
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document.write( "A^T A is always symmetric<BR>\n" );
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document.write( "Note (A^T)^T = A<BR>\n" );
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