document.write( "Question 975217: Write the equation of an ellipse, in standard form, with center at (-1,3), vertex at (3,3) and minor axis of length 2. \n" ); document.write( "
Algebra.Com's Answer #597020 by Boreal(15235)\"\" \"About 
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The vertex is 4 units from the center and the minor axis is 2 units long, so the semi-minor axis is 1 unit.\r
\n" ); document.write( "\n" ); document.write( "a^2 will be 16 and b^2=1\r
\n" ); document.write( "\n" ); document.write( "{(x+1)^2/16} + {(b-3)^2)/1}=1\r
\n" ); document.write( "\n" ); document.write( "a^2-c^2=b^2
\n" ); document.write( "16-c^2=1
\n" ); document.write( "c^2=15
\n" ); document.write( "c= +/- sqrt (15). Those are foci.\r
\n" ); document.write( "\n" ); document.write( "{(x+1)^2/16} + {(b-3)^2)/1}=1\r
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