Question

Find a ⋅ b.

a = <2, 4>, b = <2, 5>

It'd be great if you could check my work really fast!!

Answer 1

I got 24

Answer 2

@phi @.Sam. @Preetha

Answer 3

multiply corresponding components, then sum. How hard can it be ?

Answer 4

So it was 24 then? Id been over thinking it for a while and just wanted to be sure

Answer 5

I used an online inner product calculator. Multiplying and adding are not hard. Knowing what to do and when to do it can be difficult.

@scburchell11

http://onlinemschool.com/math/assistance/vector/multiply/

Answer 6

Okay thanks so much! itd be great if you could give phi a medal cause I cant give you both one