49.
In the following, find the co-ordinates of the focus, axis of the parabola, the equation of the directrix and length of the latus rectum.
It is the equation of parabola in the standard form
and open towards the right.
Comparing with
we have 4a = 10
∴ The co-ordinates of the focus S are (a, 0)
The equation of the axis of the parabola is y = 0 (x - axis).
The equation of directrix is x + a = 0 or
The length of latus rectum =
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