Orthogonal circles (2g₁g₂+2f₁f₂=c₁+c₂)
jee-mainjee-advanced
If circle S=0 and line L=0 meet at two points, S+λL=0 (λ≠∞) is family of circles through those intersection points.
What each symbol means
| Symbol | What it stands for |
|---|---|
| L | Line |
| S | Circle |
| λ | Real parameter |
When to use this
Fixed intersection points (two distinct or tangent limit).