document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=73042>Question 73042</A>: <I><SPAN STYLE=\"word-break: break-all;\">  is sqrtx^2 an identity (true for all values of x?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #52299 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=52299\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You haven't set <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28x%5E2%29 ALIGN=MIDDLE  ALT=\"sqrt%28x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > equal to anything, so I would say it's not an identity. All identities are in a sense equalities that are true for every value of x. For instance <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28sin%28x%29%29%5E2%2B%28cos%28x%29%29%5E2=1 ALIGN=MIDDLE  ALT=\"%28sin%28x%29%29%5E2%2B%28cos%28x%29%29%5E2=1\"   DISABLED_style= \"max-width:90%; height:auto;\" > for every real number (any number can work) which makes this an identity. </SPAN>\n" );
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