Browsing: All Content in PreCalculus for foci  Browse discussions |
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Resource Name |
Topic (Course) |
Technology |
Type |
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Focus of parabola
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foci (PreCalculus) |
Java Applet |
Tool |
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This applet illustrates the phenomena that parallel beams reflect on the parabola face and gather at one point. The point is the focus of parabola. Using the applet, investigate the relationship bet...
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Conic_Connections
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foci (PreCalculus) |
Sketchpad |
Tool |
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 [1]
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The user manipulates a plane and double-napped cone to generate graphs and equations of conic sections. Eccentricity, foci, and directrices are also illustrated in both 2- and 3-D.
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