Hi There

I'm really struggling with these question:

Proj_{a}= Proju_{a}is true for some vectorsvanda,u.w

Show:·u=v·vShow: counter example to show thata

isnt equal touv

I seem to have these looooooooong roundabout routes that arent making sense for the first, and for the second i have no idea how to work out a counter example!

Any help would be very appreciated!