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Question

Find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum.
x2=16y

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Solution

The given equation of parabola is x^2 = - 16y
which is of the form x2=4ay4a=6a=4
Coordinates of foucs are (0, -4)
Axis of parabola is x = 0
Equation of the directrix is

y=4y4=0
Length of latus rectum =4×4=16.


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