document.write( "Question 1026645: identify the vertices, co-vertices, foci and domain and range in 9x^2+49y^2=441 \n" ); document.write( "
Algebra.Com's Answer #641929 by robertb(5830)\"\" \"About 
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\"9x%5E2%2B49y%5E2=441\" <==> \"x%5E2%2F49+%2B+y%5E2%2F9+=+1\"\r
\n" ); document.write( "\n" ); document.write( "The major axis is along the x-axis, while the minor axis is along the y-axis.\r
\n" ); document.write( "\n" ); document.write( "The vertices are (7,0) and (-7,0), while the co-vertices are (0,3) and (0,-3).\r
\n" ); document.write( "\n" ); document.write( "For an ellipse, \"b%5E2%2Bc%5E2+=+a%5E2\".\r
\n" ); document.write( "\n" ); document.write( "==> \"9+%2B+c%5E2+=+49\" ==> \"c%5E2+=+40\", or \"c+=+2sqrt%2810%29\".\r
\n" ); document.write( "\n" ); document.write( "==> Foci are (\"-2sqrt%2810%29\",0) and (\"2sqrt%2810%29\",0).\r
\n" ); document.write( "\n" ); document.write( "Domain is the closed interval [-7,7], while the range is the closed interval [-3,3].\r
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