Tuesday, February 16, 2010

Parabolas




Today in class we talked about parabolas. Mr. Vischak showed us a picture of a parabola, a hyperbola, and an elipse on his computer. There were two lines on each of these graphs. One connecting from the vertex and one from the focus. We learned another way to write eccentricity. mAB/mAC, with A B and C being the vertex focus and directrix respectively. We also learned how to write parabolic equations. y=a(x-h)^2+k is the standard form.

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