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Question

Find the coordinates of the focus axis of the parabola the equation of directrix and the length of the latus rectum for y2=10x

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Solution

The given equation is y2=10x
Here the coefficient of x is positive.
Hence the parabola opens towards the right
On comparing this equation with y2=4ax , we get
4a=10
a=52
Coordinates of the focus =(a,0)=(52,0)
Axis of the parabola is the x-axis i.e y=0
Equation of directrix x=a i.e.x=52
Length of latus rectum =4a=10

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