Part (a) is correct.
Assume e1,e2 is an orthonormal basis of an inner product vector space V and let v=5e1-e2
Find a) ||v+3e2||
This is what o have for a) ||5e1+2e2||=||(5,2)||=sq.root of 29. I'm not sure if I computed this right any help??
And for b) I replaced v the same way but undone know the formula I should be using because my textbook sucks.