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Find the coordinates of points on the pa...

Find the coordinates of points on the parabola `y^2=8x` whose focal distance is `4.`

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Given parabola`y^2=8x`
On comparing the parabola to the `y^2=4ax`we get
`8x=4ax=>a=2`
`:.`Focal distance= `|x+a|=4`
...
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