# Conic Sections: Ellipses

by
**tesbellg**

Last updated 8 years ago

** Discipline: **

Math ** Subject: **

Algebra I
** Grade:**

12

(X^2/a^2)+(y^2/b^2)=1or(x^2/b^2)+(y^2/a^2)=1-a^2 is always the largest #-the axis divided by a^2 is the axis the elipse is grapghed on-to find foci use the formula b^2=a^2-c^2-to find the focal endpoints use the formula b^2/a, it is the distance between the focus and the endpoint-canter of graph will be at (0,0)

Major axis: The longer axis, has the length of 2a.Minor axis: The shorter axis, has the length of 2b.a: longest distance from the center to the end on an elipse b: shortest distance from the center to the shorter end of an elipse

Conic Sections: Ellipses

An elipse is the set of all points such that the sum of the distances of two given points called foci is a given distance. The distance is called focal radii.

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