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OpenStudy (anonymous):
What is a focal width and how do I find the length of it? specifically, the equation I'm working with is for a parabola: x = 1/4 y^2
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OpenStudy (anonymous):
I already know that p = 1, if that helps at all...
OpenStudy (anonymous):
I know how to find the focal POINT, but I've never heard of a focal width
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