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Harsh Grade: 11
        The distance between focus and directrix of parabola x^2= -8y ,is?
one year ago

Answers : (2)

Pooja
20 Points
										4 as the distance between focus and directrix is 4a .Here a is qual to 2. This thing we can find out by comparing d given eqn. By the general eqn. Of a parabola
										
one year ago
moumi roy
78 Points
										
the distance b/w focus and directrix is 4 that is 2a.the vertex=(0,0) and the focus is (0.-2).the dist. b/w f & ver is 2 which is a.
one year ago
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