3D saddle formula: f(xy)=z Sphere: (x-h)^2+(y-k)^2+(z-l)^2=5^2 | Hacker News

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kebman on Oct 12, 2023 | parent | context | favorite | on: Desmos 3D graphing calculator

3D saddle formula:

   f(xy)=z

Sphere:

   (x-h)^2+(y-k)^2+(z-l)^2=5^2

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