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April 21, 2014

April 21, 2014

Posted by **victor.m** on Monday, February 13, 2012 at 2:52am.

(i) Find the centre,foci and vertices

(ii)calculate the lengths of the major and minor axes

- maths -
**Reiny**, Monday, February 13, 2012 at 8:12amcomplete the square ....

4(x^2 + 6x + ...) + *y^2 - 6y + .....) = -9

4(x^2 + 6x + 9) + *y^2 - 6y + 9) = -9 + 36 + 9

4(x+3)^2 + (y+3)^2 = 36

divide by 36

(x+3)^2 /9 + (y+3)^2 /36 = 1

take it from here ...

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