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26 September, 09:47

How to find the distance between a focous and a directrix

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  1. 26 September, 10:07
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    The absolute value of p is the distance between the vertex and the focus and the distance between the vertex and the directrix. (The sign on p tells me which way the parabola faces.) Since the focus and directrix are two units apart, then this distance has to be one unit, so.
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