What is the dot product of [1, 2, 3] and [4, 5, 6]?

What is the dot product of [1, 2, 3] and [4, 5, 6]?

Approach: Sum of the products of components.

32. (1*4) + (2*5) + (3*6) = 4 + 10 + 18 = 32.

Follow-up: Are these vectors orthogonal?

Key concepts: dot product.