Choose the correct options for the following questions.
If $A=\begin{bmatrix}1\\4\\3\end{bmatrix}$ and $B=\begin{bmatrix}3&7&1\end{bmatrix}$ , we can find
Difficulty: Easy
A:
AB
B:
A+B
C:
A-B
D:
None
If $A=\begin{bmatrix}4&7&2&9\end{bmatrix}$and $B=\begin{bmatrix}12\\1\\5\\6 \end{bmatrix}$ then AB=
Difficulty: Easy
A:
Not possible
B:
119
C:
102
D:
34
Multiplication of a row vector A by a column vector B requires as a precondition that each vector have
Difficulty: Easy
A:
Same order
B:
Same number of elements
C:
Equal elements
D:
Transpose
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