Intro to ellipses
14:14
Khan AcademySal Khan,NASA
Intro to ellipses
Learn all about ellipses in this video. The standard form for an ellipse centered at the origin is x²/a² + y²/b² = 1. The semi-major axis is the longest radius and the semi-minor axis is the shortest radius. The video also explains how to shift an ellipse.
2011年2月20日
短视频
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