SOLUTION: x^2/25+y^2/16=1 what are its vertices,foci,eccentricty of the ellipse? length of major and minor axis?

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Question 980343: x^2/25+y^2/16=1
what are its vertices,foci,eccentricty of the ellipse?
length of major and minor axis?

Answer by ikleyn(52810)   (Show Source): You can put this solution on YOUR website!

You are given the ellipse

+ = .

The canonical equation of this ellipse is  (see the lesson  Ellipse definition, canonical equation, characteristic points and elements  in this site)

+ = .


Vertices:  (-5, 0);  (5, 0);  (0, 4);  (0, -4).

Length of major axis  is   2*5 = 10;     (along the x-axis)

Length of minor axis  is   2*4 = 8;     (along the y-axis)

Linear eccentricity:   c = = = = 3.

Eccentricity: = = = 0.6.

Foci:  (-c, 0) = (-3, 0)  and  (c, 0) = (3, 0)

    (Foci lie in the x-axis)


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