Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
((d^2/du^2)f(u,v) +(d^2/dv^2)f(u,v))/(2*((d^2/du^2)f(u,v)^2 + (d^2/dv^2)f(u,v)^2+1)^(3/2))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random