'2 4c' presentation slideshows

Parabolas

Parabolas. Finding the Rule and Graphing. Definitions. The parabola has a focus and a directrix l , which is the line NOT passing through the focus. There are four cases according to the concavity. Can have the vertex at the origin, or at (h,k). d(V,F) = d(V,l) = c.

397 views • 14 slides

?? ????

?? ????. ?? 3A B966C0008 ???. ????????? :. 1. ?????

298 views • 13 slides

A Square of Things Quadratic Equations

192 views • 7 slides