Saved Bookmarks
| 1. |
The point of intersection of the tangents of the parabola `y^(2)=4x` drawn at the end point of the chord x+y=2 lies onA. x-2y=0B. x+2y=0C. y-x=0D. x+y=0 |
|
Answer» Correct Answer - C (3) Let the point of intersection be `(alpha,beta)`. Therefore, the chord of contact w.r.t. this point is `betay=2x+aalpha` which is the same as x+y=2. Therefore, `alpha=beta=-2` These value satisfy y-x=0. |
|