document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=405950>Question 405950</A>: <I><SPAN STYLE=\"word-break: break-all;\"> graph the ellipse and its foci x^2/9 + y^2/4=1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #287546 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=287546\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> graph the ellipse and its foci x^2/9 + y^2/4=1\r<BR>\n" );
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document.write( "..<BR>\n" );
document.write( "standard forms of ellipse:<BR>\n" );
document.write( "(x-h)^2/a^2+(y-k)^2/b^2=1 (horizontal major axis),a>b<BR>\n" );
document.write( "(y-k)^2/a^2+(x-h)^2/b^2=1 (vertical major axis),a>b<BR>\n" );
document.write( "given ellipse has horizontal major axis<BR>\n" );
document.write( "center:(0,0)<BR>\n" );
document.write( "a^2=9<BR>\n" );
document.write( "a=3<BR>\n" );
document.write( "b^2=4<BR>\n" );
document.write( "b=2<BR>\n" );
document.write( "c=sqrt(a^2-b^2)=sqrt(9-4)=sqrt(5)=2.24<BR>\n" );
document.write( "foci=(-2.24,0),(2.24,0)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "see graph of given ellipse below:<BR>\n" );
document.write( "y=((36-4x^2)^.5)/3<BR>\n" );
document.write( "..\r<BR>\n" );
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