If Vector a = (5, -5, 3), Vector b = (1, 2, 3), determin proj (Vector a onto Vector b).

Answer 1

the projection of vector a on vector b
= (a dot b)/|b|
= (5-10+9)/√(1+4+9)
= 4/√14
or
= 4√14 /14 = 2√14/7