1.

A and B are two variable points on x, y axes respectively such that OA+OB=c. The locus of the foot of the perpendicular from origin on this line overset(" "harr)("AB") is

Answer»

`x^2+y^2=CXY`
`x^2+y^2=2cxy`
`(x+y)(x^2+y^2)=cxy`
`(x+y)(x^2+y^2)=2cxy`

ANSWER :A


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