curves_surfaces : curves and surfaces

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curves_surfaces · curves and surfaces

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Members: 81
Category: Geometry
Founded: Nov 4, 2004
Language: English

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Description

This forum discusses anything related to curves and surfaces.

Please see:
http://xahlee.org/SpecialPlaneCurves_dir/specialPlaneCurves.html
http://xahlee.org/surface/gallery.html

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new updates. Geogebra files lots update in the past 2 months. About 20 GeoGebra files are added. See: http://xahlee.org/SpecialPlaneCurves_dir/Intro_dir/whatsNew.html Xah xah@... Posted - Fri Feb 15, 2008 10:14 am	xah lee p0lyglut Offline Send Email
Equiangular spiral and complex-point version Here, I've added the draggable complex point q through which there's a unique equiangular spiral going through (1, 0) and with "collapsed radius" of 1. By Posted - Thu Jan 11, 2007 6:10 pm	Chris Young c1572young Offline Send Email
Triangle regions; thicker border on main triangle Here, I've just used the unit normal vector to thicken the border of the main triangle to distinguish it from the sub-triangles (thinner, colored borders). Posted - Thu Oct 19, 2006 7:18 pm	Chris Young c1572young Offline Send Email
Triangle regions with striping I'm not exactly sure why this is working, but I've finally got overlapping stripes to show how the positive area (in this case, the yellow triangle outside Posted - Wed Oct 18, 2006 1:25 am	Chris Young c1572young Offline Send Email
[GraphingCalcUsers] Triangle regions: Explanation of how "code" wor Thought you might be interested in this as an example of illustrating algebraic geometry with Graphing Calculator. Free GC viewers are available at Posted - Tue Oct 17, 2006 5:18 pm	Chris Young c1572young Offline Send Email
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Message History

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2008		1
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2006	1	2	2	4			1			3
2005	11	7	12	16	2			4	2	4	1
2004											5	5

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