document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1075727>Question 1075727</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the slope of the tangent line to the ellipse x^2/9+y^2/4=1 at the point (x,y)<BR>\n" );
document.write( "slope =?\r<BR>\n" );
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document.write( "Are there any points where the slope is not defined? (Enter them as comma-separated ordered-pairs, e.g., (1,3), (-2,5). Enter none if there are no such points.) <BR>\n" );
document.write( "slope is undefined at =? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #690366 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=690366\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the slope of the tangent line to the ellipse x^2/9+y^2/4=1 at the point (x,y)<BR>\n" );
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document.write( "x^2/9+y^2/4=1<BR>\n" );
document.write( "4x^2 + 9y^2 = 36<BR>\n" );
document.write( "8xdx + 18ydy = 0<BR>\n" );
document.write( "4xdx = -9ydy<BR>\n" );
document.write( "dy/dx = -4x/9y<BR>\n" );
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document.write( "Are there any points where the slope is not defined? (Enter them as comma-separated ordered-pairs, e.g., (1,3), (-2,5). Enter none if there are no such points.) <BR>\n" );
document.write( "Undefined where the DEN is zero.<BR>\n" );
document.write( "--> y = 0<BR>\n" );
document.write( "x^2/9 = 1<BR>\n" );
document.write( "(-3,0) and (3,0) </SPAN>\n" );
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