Thread Subject: the relationship between Hyperpola and ellipse

Hello all

I have a question regarding the mathmatical expression
i have the case of two points moving to draw a curve like hyperpola ,however with small change in these two points , we got a curve like ellipse . How can I descripe this mathematically as equation.

Sorry not to describe the problem clearly.My language is not that good.

cheers!

Mona

On Nov 21, 3:10 pm, "mona " <iee2...@yahoo.com> wrote:
> Hello all
>
> I have a question regarding the mathmatical expression
> i have the case of two points moving to draw a curve like hyperpola ,however  with small change in these two points  , we got a curve like ellipse . How can I descripe this mathematically as equation.
>
> Sorry not to describe the problem clearly.My language is not that good.
>
> cheers!
>
> Mona

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Just do a web search for "conic sections" and you'll find pages like
this, complete with equations (which you've asked for), figures, and
much more:
http://en.wikipedia.org/wiki/Conic_section