Calculus: Visualizing the quadratic surface z = x^2 - y^2

The surface z = x^2 -y^2 is generated by sliding the curve z = -y^2 from the y-z plane along the curve z = x^2 in the x-z plane.


This is really cool! Thanks for posting this. :)
Dear Elizabeth. Sorry, haven't been on WyzAnt (or tutoring in general) for a while. If useful, you can find the videos (entire calculus III lecture or the visual aids that were deleted) by searching Arkady E in conjunction with Calculus III
All the best,
p.s. You look very familiar... Either from WyzAnt tutoring forums or elsewhere. :)  
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