A good answer might be:


Answer is always a Vector

Notice that even though the above two answers are easy to guess, there is some subtlety to them:

The output of scaling is a vector. The boldface 0 in the last equation is the vector represented by (0,0,0)T, not the real number zero.

QUESTION 4:

What is:

2 + 4( 3, 2, 5)T