document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=254887>Question 254887</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If f(x,y)=x^2-4xy+y^3+4y, the sum fxx +fyy is given by?\r<BR>\n" );
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document.write( "A) 2-6y B)0 C)2x+4 D)-4(x+y), E)none of the above </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #187232 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=187232\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=fx=2x-4y ALIGN=MIDDLE  ALT=\"fx=2x-4y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=fxx=2 ALIGN=MIDDLE  ALT=\"fxx=2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=fy=-4x%2B3y%5E2%2B4 ALIGN=MIDDLE  ALT=\"fy=-4x%2B3y%5E2%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=fyy=6y ALIGN=MIDDLE  ALT=\"fyy=6y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=fxx%2Bfyy=2%2B6y ALIGN=MIDDLE  ALT=\"fxx%2Bfyy=2%2B6y\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "E) None of the above </SPAN>\n" );
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