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0 votes
2.3k views
in Analytical Geometry by (47.4k points)
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Length of the latus rectum of the parabola y2 = -25x: 

(a) 25 

(b) -5 

(c) 5 

(d) -25

1 Answer

+1 vote
by (47.8k points)
selected by
 
Best answer

(a) 25

y2 = -25a

Here 4a = 25 which is the length of the latus rectum.

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