A couple problems with vectors and 3-D space

The first one is correct.
In the second did you really mean >=?
If so, we have the complement of the interior of a cylinder with central axis the z-axis and radius 5/2.
 
Daniel_Feldman said:
So, for the first one, is the graph just a triangular representation of the plane in 3-D?
Click to expand...
What in the world does that mean?
No the first is just a plane.
How does one graph a plane?
 
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