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Here is the question:

Parameterize and cartesian equation problem? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.

edit: I see now that the question has been deleted. According to the guidelines there it is okay to post links to a site to offer more information on a question, so I can only speculate as to why it was deleted.

Here is the original question:Parameterize and cartesian equation problem?

If P is any point on the circle C in the xy-plane of radius a >0 and center (0,a),let the straight line through the origin and P intersect the line y = 2a at Q, and let the line through P parallel to the x-axis intersect the line through Q parallel to the y-axis at M. As P moves around C, M traces out a curve called the witch of Agnesi.

For this curve, prove that it can be parameterized as W (t) = (2a tan t, 2a cos2 t). Fi- nally, use this parameterization to find a cartesian equation for the curve by eliminating the variable t.

Parameterize and cartesian equation problem? - Yahoo! Answers

I have posted a link there to this topic so the OP can find my response.

edit: I see now that the question has been deleted. According to the guidelines there it is okay to post links to a site to offer more information on a question, so I can only speculate as to why it was deleted.

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