InterviewSolution
Saved Bookmarks
| 1. |
If 2x-y+1=0 is a tangent on the parabola which intersect its directrix at (1,3) and focus is (2,1), then equation of axis of parabola is |
|
Answer» `11x-2y=24` `(x-2)/2=(y-1)/(-1)=(-2(4-1+1))/(4+1)=(-8)/5` `impliesx=2-16/5=(-6)/5` `y=8/5+1=13/5` `:.` Slope of DIRECTRIX `=(13/5-3)/((-6)/5-1)=(-2/5)/(-11/5)=2/11` `:.` Equation of AXIS, `=y=1=(-11)/2(x-2)` `implies2y-2=-1x+22` `implies11x+2y=24` |
|