1. x^2 + y^2 = 225

y^2 = -x^2 + 225

y = +_SQRT(-x^2 + 225)

Ellipse

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- Aug 23rd 2009, 01:14 AMbobbyboy1111Please show me what I am doing wrong (conic section)1. x^2 + y^2 = 225

y^2 = -x^2 + 225

y = +_SQRT(-x^2 + 225)

Ellipse - Aug 23rd 2009, 03:17 AMmr fantastic
I have no idea what your question. But yes, x^2 + y^2 = 225 is an ellipse. In fact, it's a very special ellipse .... its an ellipse whose eccentricity is equal to zero - more commonly known as a

**circle**. In your case the circle has center at (0, 0) and r = 15. - Aug 23rd 2009, 04:20 AMbobbyboy1111
- Aug 23rd 2009, 08:11 PMmr fantastic
It could be .... I really don't know since you haven't said waht the original question was.

Maybe your equation x^2 + y^2 = 225 is wrong?

Since you haven't posted the actual question you were working on, nor shown any working, and since my crystal ball is currently being serviced, at this point in time nothing further can be said to help you. - Aug 23rd 2009, 10:24 PMbobbyboy1111