How do you define curvature for curves on three-dimensional surfaces when the surface is given in the form z=f(x,y)?(adsbygoogle = window.adsbygoogle || []).push({});

The resulting formula should be a lot simpler than the one for parametric curves of the form r(t)=(x(t),y(t),z(t)), like it becomes for two-dimensional curves given by y=f(x).

I cannot figure it out! Please help.

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# Curvature for surfaces?

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