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Focus-Directrix Definition of a Parabola
Author:
stampinpost
Move the slide to move the focus point up and down along the axis of symmetry.
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גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Drop Down List Demonstration
Rotating icosahedron
Simple gravity pendulum
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d bouncer
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