# What is the dot product of # (2i -3j + 4k)# and #(i + j -7k)#?

##### 2 Answers

Mar 5, 2018

#### Answer:

#### Explanation:

I'm going to name these two vectors as

The dot product of two vectors is defined as

We don't have an angle to use, so we'll calculate the dot product using by adding the products of the components.

Therefore,

Mar 5, 2018

#### Answer:

The dot product is

#### Explanation:

The dot product of

and

is

Here, we have