document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=574521>Question 574521</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the standard form of an ellipse whose endpoints of the major axis are at (-11,5) and (7,5) and endpoints of the minor axis are at (-2,9) and (-2,1)? </SPAN>\n" );
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document.write( "Standard form of equation for an ellipse with horizontal major axis:<BR>\n" );
document.write( "(x-h)^2/a^2+(y-k)^2/b^2=1, a>b, (h,k) being the (x,y) coordinates of the center.<BR>\n" );
document.write( "For given ellipse:<BR>\n" );
document.write( "center:(-2,5)<BR>\n" );
document.write( "length of horizontal major axis=11+7=18=2a<BR>\n" );
document.write( "a=9<BR>\n" );
document.write( "a^2=81<BR>\n" );
document.write( "length of minor axis=9-1=8=2b<BR>\n" );
document.write( "b=1<BR>\n" );
document.write( "b^2=1<BR>\n" );
document.write( "Equation of given ellipse:<BR>\n" );
document.write( "(x+2)^2/81+(y-5)^2=1<BR>\n" );
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