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  • 14-11-2018
  • Mathematics
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how to find the distance between a focous and a directrix

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kitrudd82887
kitrudd82887 kitrudd82887
  • 14-11-2018

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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