InterviewSolution
Saved Bookmarks
| 1. |
A circle S having centre (alpha, beta) intersect at three points A, B and C such that normals at A,B and C are concurrent at (9,6) for parabola y^(2)=4x and O origin. Then, |
|
Answer» Sum of modulus of SLOPES of normals at points `A, B` and `C` is 6 `implies6=9m-2m-m^(3)` `impliesm^(3)-7m+6=0impliesm=1, +2, -3` `:.` Centre is `(11/2, 3/2)` |
|