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Mathematics 24 Online
OpenStudy (anonymous):

Find the vertex, focus, directrix, and focal width of the parabola -1/40x^2=y

OpenStudy (anonymous):

@agent0smith

OpenStudy (agent0smith):

http://www.jfkcougars.org/ourpages/auto/2013/2/5/43231143/Conics-Formula-Sheet.pdf very top left corner has everything

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