Question

What is the dot product of `(-300i + 200j - 150k)` and `(i + j -7k)`?

Answer 1

`A*B=950`

Explanation:

`A=(ai+bj+ck)`

`B=(di+ej+fk))`

`A*B=a*d+b*e+c*f`

`A*B=((-300*1)+(200*1)+(-150*(-7)))`

`A*B=-300+200+1050`

`A*B=950`