(DOT PRODUCTS) Which of the following expressions are meaningful? Which are meaningless? Explain.
How can I distinguish the meaningful dot product properties?
a) (a . b) . c
b) (a . b)c
c) a (b . c)
d) a . (b + c)
e) a . b + c
f) a . (b + c)
. = multiplication
 1 Answer
 In multivariable calculus

 by
 anon123
 1029 Views
 2 years ago
Answers
a) (a . b) . c  meaningless, scalar • vector b) (a . b)c  meaninful , (scalar)vector c) a (b . c)  meaningful, (scalar)(scalar) d) a . (b + c)  meaningful, vector • vector e) a . b + c  meaninless, scalar + vector f) a . (b + c)  meaningless, scalar • scalar 