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Quadric

A quadric is a quadratic surface. A surface of the form

(x^2)/(a^2+theta)+(y^2)/(b^2+theta)+(z^2)/(c^2+theta)=1

is also called a quadric, and theta is said to be the parameter of the quadric.

See also

Quadratic, Quadratic Surface

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References

Update a linkTakahashi, H. "Quadrica Page." http://www2.kawase-h.ed.jp/Teachers/~Takahashi/Quadrica.html

Referenced on Wolfram|Alpha

Quadric

Cite this as:

Weisstein, Eric W. "Quadric." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Quadric.html

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