Question

Скалярное произведение векторов​

Answer 1

$ttoverline{a}cdotoverline{b}=-1cdot(-3)+2cdot1+(-3)cdot2=3+2-6=-1$

Ответ: -1

Answer 2

$a times b = - 1 times ( - 3) + 2 times 1 + ( - 3) times 2 = \ = 3 + 2 - 6 = - 1$