Question

If w=⟨–7,–3⟩ what is w · w?

40

40√

58

58√

Answer 1

if w = (a1, b1) then w. w = a1^2 + b1^2

now plug in a1=-7 and b1 = -3

Answer 2

i ogt -58?

Answer 3

@RadEn

Answer 4

negative is squared always be postive
(-7)^2 + (-3)^2 = 49 + 9 = 58