Question

Find a • b.

a = 4i + 8j, b = -2i + 3j

Answer 1

@Venny Can you help me out bud?

Answer 2

To find the dot product, you multiply the corresponding components. Then you add up the products.

Answer 3

Oh that's easy. So it's <-8, 24>

Answer 4

you got the products -8 and 24

now you add them up: -8+24 = 16, which is the final result of the dot product

Answer 5

ahhh cool :) thanks.

Answer 6

np