1.

If the origin is the limiting point of a system of coaxal of whichx^(2) + y^(2) + 2gx + 2gy+ c = 0is a member, then the equation of the circle of the orthogonal system is

Answer»

`(x^(2) + y^(2)) (g + lambda f) + 4C (3x + LAMBDAY) = 0 `
`(x^(2) + y^(2)) (g + lambda f) + c (x + lambday) = 0 `
`(3x^(2) + 3Y^(2)) (2G -4LAMBDA f ) + c (x - lambda y) = 0 `
`(x^(2) + y^(2)) (g - lambda f ) + c (x - lambda y) = 0 `

Answer :B


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