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Q.

The parabola having its focus at (3,2) and directrix along y-axis has its vertex at:


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a

32,1

b

32,2

c

32,12

d

32,-12 

answer is B.

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Detailed Solution

Given,
Focus = (3, 2)
The directrix equation is given below,
 x=0.
We know
The axis of parabola pass from focus and also it is perpendicular to the directrix. So,
y=2
So the points are (3, 2) and (0, 2)
Mid-point of these points,
=3+02, (2+22)
=32,2
So, y-axis has its vertex at 32,2.
Correct option is 2
 
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