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Le 2010-10-17 13:43, Tim Cook a écrit :
>> Are they true ellipses or just scaled circles ?
>
> Er? I thought that's what ellipses were...rather, a circle being a
> special case of an ellipse. (One site I looked at mentioned scaling
> everything so one ellipse is a unit circle at origin and solving from
> there...?)
Yes, a circle is a special case of an ellipse.
No, an ellips is not an unevenly scalled circle. It's close but not
quite the same.
>
Alain
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