Question

find the projectiom of vector a=i+j on vector b= 2i-j​

Answer 1

Explanation:

refer to the attachment

Answer 2

Answer:

1/√5

Explanation:

since projection of a on b = a.b/|b|

therefore

(I+j).(2i-j)/|2i-j| = 2-1/√4+1 = 1/√5