Question

Sean los vectores: A = 3i - 4j , B = 2A y C = 2i - 5j .Hallar: |A - B + C|

Answer 1

A - B + C = A - 2 A + C = - A + C

- A + C = - (3i - 4j) + (2i - 5j) = - i - j

| A - B + C | = √(1² + 1²) = √2

Saludos.