1.

If the circle x^2 + y^2 + 2x - 2y + 4 = 0 cuts the circle x^2 + y^2 + 4x - 2fy +2 = 0 orthogonally, then f =

Answer»

1
2
`-1`
`-2`

ANSWER :C


Discussion

No Comment Found

Related InterviewSolutions