| 1 | This one is a hyperbolic parabloid. | |
| 2 | I mean there are many paraboloids in life and other surfaces, too. | |
| 3 | And, so, we saw that the graph is this paraboloid pointing downwards. | |
| 4 | It is this parabola and is pointing up. | |
| 5 | Of course, I didn't tell you which way I am orienting my paraboloid. |
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