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Question: In search of the parameter of a Surface

Question:In search of the parameter of a Surface

koenf1 52 Maple
May 06 2009
0

Hi guys,

I modelled a surface, of which I'd like to have a mathematical representation. The following image is what I need to have.

 

I've written the parameters of both curves that are drawn on it.

I'm supposed to be able to find it, but I think I just didn't do enough pure mathematics in the past year ...

Hope you can help me?

Thanks
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