Question

si a=5i-6j y b=-8i+4j determinar el vector c de modo que 6a-2b-2c=0

Answer 1

a = 5i - 6j = (5,-6)

b = -8i + 4j = (-8,4)


6a - 2b - 2c = 0

2c = 6a - 2b

c = 3a - b

c = 3(5,-6) - (-8,4)

c = (15,-18) - (-8,4)

c = (15-(-8) , -18-4)

c = (15+8 , -18-4)

c = (23,-22)

Por tanto el vector c es 23i - 22j