Linear Algebra - Inner Product Spaces

[jackqpublic]

Homework Statement

http://img199.imageshack.us/img199/3230/mathquestion2.png

Thank you very much in advance!
EDIT: subspace U = span(1,t)

 

[jackqpublic]

Also, how do you prove this inequality:
http://img196.imageshack.us/img196/6901/inequality.png

 

[jackqpublic]

I knew my prof was such a dick that even you geniuses couldn't understand the problem.

 

[Cyosis]

I am pretty sure there are plenty of people that can help you with this question. However by not showing any attempt yourself you have violated the forum rules and it is unlikely you will receive any help until you at least have shown your attempt at a solution or at the very minimum your thoughts about this problem.