What is the dot product of # bbvec v = << 4,2 >># and # bbvec w =<< 1,-3 >>#?
1 Answer
Oct 4, 2017
# bbvec v * bbvec w = -2 #
Explanation:
We have:
# bbvec v = << 4,2 >>#
# bbvec w =<< 1,-3 >>#
The dot product is given by:
# bbvec v * bbvec w = (4)(1) + (2)(-3) #
# \ \ \ \ \ \ \ \ \ \ \ = 4-6 #
# \ \ \ \ \ \ \ \ \ \ \ = -2 #
