I'm really struggling with these question:
Projau = Projav is true for some vectors a, u and w.
Show: u · v = v · a
Show: counter example to show that u isnt equal to v
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!