Vectors: Given a &#8722; b = c and c = <46, 26>, .

[Math-hating-Aggie]

Given: a − b = c and c = <46, 26>.
Which of the following expressions is NOT
meaningful?
1. 34(b · c)a
2. a · (b · c)
3. (b · c) − |a|
4. (b · c)a
5. b · (c + a)

 

[pka]

If \(\displaystyle x \cdot y\) is meaningful only if x & y are vectors and \(\displaystyle x \cdot y\) is a number then you can see which one is meaningless.