document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=991364>Question 991364</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+ln%28x-y%29+=+xy+ ALIGN=MIDDLE  ALT=\"+ln%28x-y%29+=+xy+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "(a). Find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+dy%2Fdx+ ALIGN=MIDDLE  ALT=\"+dy%2Fdx+\"   DISABLED_style= \"max-width:90%; height:auto;\" > at (1,0)<BR>\n" );
document.write( "(b). Write the equation of the tangent line to the graph at (1,0)\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #611251 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=611251\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Differentiate implicitly,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28dx-dy%29%2F%28x-y%29=xdy%2Bydx ALIGN=MIDDLE  ALT=\"%28dx-dy%29%2F%28x-y%29=xdy%2Bydx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dx-dy=%28x-y%29xdy%2B%28x-y%29ydx ALIGN=MIDDLE  ALT=\"dx-dy=%28x-y%29xdy%2B%28x-y%29ydx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-%28x-y%29xdy-dy=%28x-y%29ydx-dx ALIGN=MIDDLE  ALT=\"-%28x-y%29xdy-dy=%28x-y%29ydx-dx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-%28x-y%29x-1%29dy=%28%28x-y%29y-1%29dx ALIGN=MIDDLE  ALT=\"%28-%28x-y%29x-1%29dy=%28%28x-y%29y-1%29dx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dy%2Fdx=%28%28x-y%29y-1%29%2F%28-%28x-y%29x-1%29 ALIGN=MIDDLE  ALT=\"dy%2Fdx=%28%28x-y%29y-1%29%2F%28-%28x-y%29x-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So then,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dy%2Fdx=%28%281-0%290-1%29%2F%28-%281-0%291-1%29 ALIGN=MIDDLE  ALT=\"dy%2Fdx=%28%281-0%290-1%29%2F%28-%281-0%291-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dy%2Fdx=%28-1%29%2F%28-1-1%29 ALIGN=MIDDLE  ALT=\"dy%2Fdx=%28-1%29%2F%28-1-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dy%2Fdx=-1%2F%28-2%29 ALIGN=MIDDLE  ALT=\"dy%2Fdx=-1%2F%28-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=dy%2Fdx=1%2F2 ALIGN=MIDDLE  ALT=\"dy%2Fdx=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use the point-slope form of the tangent line,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y-0=%281%2F2%29%28x-1%29 ALIGN=MIDDLE  ALT=\"y-0=%281%2F2%29%28x-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%281%2F2%29x-1%2F2 ALIGN=MIDDLE  ALT=\"y=%281%2F2%29x-1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/display-illustration.mpl?tutor=Fombitz&illustration_name=fd5.JPG\">. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );