Question

Dados os vetores:

A = 3i – 4j

B= 5i + 8j

C= -3i +2j



Determine os valores:

a) a) A-B;

b) b) A+3C-5B;

c) c) A+B;

d) d) |A|;

e) e) |A+C|

Answer 1

a)
3i-4j - 5i-8j = -2i -12j

b)
3i-4j - 9i+6j - 25i - 40j = -31i -38j

c)
3i-4j + 5i+8j = 8i+4j

d)
|3i-4j| = 3i=4j

e)
|3i-4j - 3i+2j| = |-2j| = 2j