document.write( "Question 748094: what is center and endpoints of major and minor axis and foci\r
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document.write( "2x^2 + 4y^2 + 4x - 12y = 5 \n" );
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Algebra.Com's Answer #455326 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! what is center and endpoints of major and minor axis and foci \n" ); document.write( "2x^2 + 4y^2 + 4x - 12y = 5 \n" ); document.write( "----- \n" ); document.write( "2x^2 + 4x + 4y^2 - 12y = 5 \n" ); document.write( "Complete the Square: \n" ); document.write( "2(x^2+2x+1) + 4(y^2-3y + (9/4)) = 5 + 2 + 9 \n" ); document.write( "----- \n" ); document.write( "2(x+1)^2 + 4(y-(3/2))^2 = 16 \n" ); document.write( "---- \n" ); document.write( "(x+1)^2/8 + (y-(3/2))^2/4 = 1 \n" ); document.write( "------ \n" ); document.write( "center: (1,3/2) \n" ); document.write( "---- \n" ); document.write( "semi-major axis: sqrt(8) = 2sqrt(2) \n" ); document.write( "semi-minor axis: sqrt(4) = 2 \n" ); document.write( "---- \n" ); document.write( "major axis end-points: (1+2sqrt(2),3/2) and (1-2sqrt(2),3/2) \n" ); document.write( "minor axis end-points: (1,(3/2)+2) and (1,(3/2)-2) \n" ); document.write( "----- \n" ); document.write( "a^2 = b^2+c^2 \n" ); document.write( "c = sqrt[a^2-b^2] = sqrt[8+4] = 2sqrt(3) \n" ); document.write( "----- \n" ); document.write( "foci: (1+2sqrt(3),3/2) and (1-2sqrt(3),3/2) \n" ); document.write( "====================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "---------------------- \n" ); document.write( " |