document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=471421>Question 471421</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I am actually one of the tutors on this site (richard1234) and I have an algebra/analysis problem:\r<BR>\n" );
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document.write( "Prove that there exists a rational function f satisfying f(x^2) = f(x)^2 - a\r<BR>\n" );
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document.write( "if and only if a = 0 or a = 2. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #323313 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=323313\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Just an opinion:\r<BR>\n" );
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document.write( "if it is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%5E2%29+=+%28f%28x%29%29%5E%282-a%29 ALIGN=MIDDLE  ALT=\"f%28x%5E2%29+=+%28f%28x%29%29%5E%282-a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the problem becomes rather routine;<BR>\n" );
document.write( "but if it is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%5E2%29+=+%28f%28x%29%29%5E2+-+a ALIGN=MIDDLE  ALT=\"f%28x%5E2%29+=+%28f%28x%29%29%5E2+-+a\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then we're in for a long haul... </SPAN>\n" );
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