# What is the dot product of # bbvec v = << 4,2 >># and # bbvec w =<< 1,-3 >>#?

##### 1 Answer

Oct 4, 2017

#### Answer:

# 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 #