Hello,

I have a practice exam paper and I have 3 questions which i have no idea how to do or what the answers are. I somebody could explain them that would be great, I'm desperate!

Q3. Let B = [2 0 1 3/3 1 2 7/5 1 3 13]

a) use caussian algorithm to bring B to echelon form U.

b) Find a basis for the null space of B.

c) Find a basis for the column space of B.

d) Find a basis for the row space of B.

I know its a lot but i have had a few equations i was stuck and am slowly working my way through but i don't know where to begin on these ones. Apparently these will be the hardest ones on the exam and worth the most.

Any help will be vastly appreciated! Thank you

Tania