what is focus distance in the parabola

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Dear student,
The focal distance is the distance of any point on the parabola from its focus. Generally in standard form of parabola the focal distance of any point (x,y)is equal to a+x, where 4a is length of latus rectum, and and x is the x coordinate of the point.
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what is focus distance in the parabola

Dear student, The focal distance is the distance of any point on the parabola from its focus. Generally in standard form of parabola the focal distance of any point (x,y)is equal to a+x, where 4a is length of latus rectum, and and x is the x coordinate of the point. With regards

Dear student,
The focal distance is the distance of any point on the parabola from its focus. Generally in standard form of parabola the focal distance of any point (x,y)is equal to a+x, where 4a is length of latus rectum, and and x is the x coordinate of the point.
With regards