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OpenStudy (anonymous):
what is directrix ?
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OpenStudy (anonymous):
the directrix has to do witha parabola. A parabola is a plane curve with the property that each of its points is equidistant from a given fixed point and a given fixed line. The fixed point is called the line and the fixed line is called the directrix
OpenStudy (anonymous):
@LagrangeSon678 So far as i know, ellipse and hyperbola too have directrix!
OpenStudy (anonymous):
\[Directrix\ is\ a\ line \ from\ a\ fixed\ point\ with\ a\ fixed\ distance\]
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