Dot Product

Find the dot product of <1, -2> and <3, 2>.

• 1

• <3, -4>

• <4, 0>

• -1

Find the dot product of the given vectors:

• 92

• 0

• -92

• none of the above

If the dot product of two vectors are equal to zero, then what do we know about the two vectors?

• They are parallel.

• They are orthogonal.

• They are neither.

• 10

• 0

• 18

• -8

What type of quantity is produced by the dot product of two vectors?

• scalar

• vector

u = <3, -9, -2> v = <-5, 4, 10>

Find u ⋅ v

(a)  

Let vectors u = 7i + 4j - 3k and v = -4j+2k.

What is u*v?

(a)  

• 6

• -14

• 22

• -20

If vector X <1,9>

vector Y is <3,2>

Find X*Y

Mathematical Equivalence

ON

• -24

• 24