Question

Describe vectors b and c in terms of vector a:

Answer 1

b =
`(1)/(4)` a , c = -
`(1)/(2)` a

Explanation:

from the diagram

a = < 4, 8 >

b = < 1, 2 >

then

b =
`(1)/(4)` a

c = < - 2, - 4 > = -
`(1)/(2)` < 4, 8 > = -
`(1)/(2)` a