Question

evaluate the dot product of (-1,2) and (3,3)

Answer 1

Please help, I'm not really sure how to even start this problem

Answer 2

Dot product is nothing but multiplication of corresponding coefficient and summing up them. = (-1)(2)+(3)(3) =?

Answer 3

is the answer 7?

Answer 4

Yes;

Answer 5

the answer is 3

Answer 6

Yes the final answer is 3, but according to @ivano_logy 's work, it is 7.
So @ivano_logy is wrong.

Answer 7

Ops my bad the answer should be (-1)(3)+(2)(3)=

Answer 8

@ivano_logy @primeralph It's fine! Thanks for your help!

Answer 9

:)

Answer 10

Sorry man. I should have checked.