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Not sure if vectors are pre or post calculus
So we had a few examples of vector multiplication in class and I don't understand something.
The following vectors were multiplied:
But in another example,
So why was the answer in the first example a single numerical answer while the answer to the second one was in matrix form?
Homework Statement
So we had a few examples of vector multiplication in class and I don't understand something.
The following vectors were multiplied:
[5 2 1] by
3
-4
7
...and the answer was 14 [(5*3) + 2*(-4) + (1*7)].
But in another example,
2
1
was multiplied by [-1 3]
...and the answer was
-2...6
-1...3
So why was the answer in the first example a single numerical answer while the answer to the second one was in matrix form?