QUESTION 20:
Now consider what this might mean: add the vector (1, 2)T to the point (4, 4)T.
If you think that makes sense, then do the calculation. What type of object is the result?
When one of the vectors is a zero vector:
length(u + 0) <= length(u) + length(0)
Add the zero matrix ( 0, 0 )T to the matrix ( 4, 3 )T. If (0, 0)T represents a displacement vector, it means do nothing to change position. In the diagram, no arrow can be drawn for the zero vector since it has no length.
Now consider what this might mean: add the vector (1, 2)T to the point (4, 4)T.
If you think that makes sense, then do the calculation. What type of object is the result?