Liavas Net
Z=1 is that of a curve obtained when you intersect the above paraboloid by the plane z=1 Note that it is a circle perched atop the plane z=1 On the other hand, the single equation x² y² = 1 is the right circular cylinder of radius 1, whose axis is the zaxis It is clearly a surface and not a curveStack Exchange network consists of 178 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers Visit Stack Exchange
