Can you solve these 3 linear algebra problems?

Question

They are 1.2.3 (b) & (c); 1.3.4
http://www.math.hkbu.edu.hk/~wmxue/m0011/assignment1.pdf
You can mail your answer to me and/or post it here.

Answer 1

I can. I could even send you the answers. I'm not sure what the point of that exercise would be, though, since I already know it, and you would not have learned anything.