Question

what is the projection of (3,4) onto (3,1)?

A. 0.7(3,1)
B. 1.3(2,4)
C. 1.3(3,1)
D. 0.7(2,4)

Answer 1

These are vectors, right?

Answer 2

yes

Answer 3

\[proj _{v}u = (\frac{ uv }{ vv })v\]

Answer 4

Where those products are dot products.

Answer 5

'The projection of u onto v'

Answer 6

so how would i plug it into that? (3,4)/(3,1)?

Answer 7

Yes, but you would have to find the dot product and u and v, the dot product of v and v. Not just the vectors. You know how to find dot product?

Answer 8

no