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OpenStudy (anonymous):
Find the focus, directrix, and focal diameter of the parabola. y2 = 9x
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OpenStudy (sriram):
focus at (9/4,0) directrix x=-9/4 is focal dia and latus rectum same?
OpenStudy (anonymous):
I'm not sure, I don't know what latus rectum is
OpenStudy (anonymous):
I think the focal diameter is 9.. thank you!
OpenStudy (sriram):
the latus rectum is also 9!
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