1.

An ellipse has semi-major axis of length 2 and semi-minor axis of length 1. It sides between the co-ordinate axes in the first quadrant, while maintaining contactwith both x-axis and y-axis. Q. The locus of the foci of the ellipse is :

Answer»

`X^(2)+y^(2)+(1)/(x^(2))+(1)/(y^(2))=16`
`x^(2)+y^(2)+(1)/(x^(2))-(1)/(y^(2))=2sqrt(3)+4`
`x^(2)+y^(2)-(1)/(x^(2))-(1)/(y^(2))=2sqrt(3)+4`
`x^(2)-y^(2)+(1)/(x^(2))-(1)/(y^(2))=2sqrt(3)+4`

Answer :A


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