Should be an easy one: Find foci and vertices

4x^{2}+9y^{2}=1

answers are

Vertices=

Foci=

I cant seem to be able to turn the equation into proper ellipse form to derive numbers from.

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- Aug 20th 2012, 01:34 PMGreymalkinVertices/Foci of an ellipse
Should be an easy one: Find foci and vertices

4x^{2}+9y^{2}=1

answers are

Vertices=

Foci=

I cant seem to be able to turn the equation into proper ellipse form to derive numbers from. - Aug 20th 2012, 02:31 PMSorobanRe: Vertices/Foci of an ellipse
Hello, Greymalkin!

Quote:

. .

. . .

The general form is: .

Note the coefficient of should be 1.

We have: .

Multiply the first term by , the second by

. .

Hence: .

And: .