Question

If w=⟨1,–1⟩ what is w · w?

0

1

2

2√

Answer 1

@Michele_Laino

Answer 2

(1)^2+(-1)^2?

Answer 3

like in the previous exercise, we have to compute this:
(w,w)=1^2+(-1)^2=...?

Answer 4

and I get 2

Answer 5

ok!