# Thread: Linear Algebra.... Help me please...

1. ## Linear Algebra.... Help me please...

Not sure of my answer....Please help...I got the 21/sqrt (26) + sqrt (26) but not sure

2. ## Re: Linear Algebra.... Help me please...

the projection is going to be a vector.

The projection of $\vec{v}$ onto $\vec{u}$ is

$(\vec{v}\cdot \vec{u}) \dfrac{ \vec{u}}{\|\vec{u}\|^2}$