Re: how to determine the center or foci of an ellipse from a slope
- To: mathgroup at smc.vnet.net
- Subject: [mg88972] Re: how to determine the center or foci of an ellipse from a slope
- From: Szabolcs <szhorvat at gmail.com>
- Date: Thu, 22 May 2008 02:39:59 -0400 (EDT)
- References: <g11r0s$a87$1@smc.vnet.net>
On May 21, 8:52 pm, John Kellerham <johnkeller... at yahoo.com> wrote: > Hi guys, > I have a slope field (2d-array), which is defined > by ellipses (can be arbitrarily tilted), which all have the > same foci and center but different major and minor half axes. > In fact, I obtained the tangent at each point by measurements. > > Does somebody have an idea on how to approach the problem > of finding the center or the foci of the ellipses? I think > there is no exact solution to the problem? > For those who might post replies to this topic: This same question has also been asked here: http://tinyurl.com/5gdn2t