Show that an ellipse has exactly 4 vertices, unless it is a circle.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.2: Ellipses
Problem 22E
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Exercise 1
Exercise 1. Show that an ellipse has exactly 4 vertices, unless it is a circle.
We say that a planar curve is conver if through each point in the image
of it there passes a line with respect to which the curve lies on side. The
main aim of this section is to show that:
Transcribed Image Text:Exercise 1. Show that an ellipse has exactly 4 vertices, unless it is a circle. We say that a planar curve is conver if through each point in the image of it there passes a line with respect to which the curve lies on side. The main aim of this section is to show that:
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