The length of the chord of the parabola x2=4y having equation x |
|||
(a) |
2 |
(b) |
3 |
(c) |
6 |
(d) |
8 |
The length of the chord of the parabola x2=4y having equation x |
|||
(a) |
2 |
(b) |
3 |
(c) |
6 |
(d) |
8 |
x2=4y
x
solving together we get
x2 = 4
16
=0
x1+x2=2 x1x2=
=−16
Similarly,
=4y
2y2+32−16y=4y
AB=
=
=
==6
Option (c)