Problems for next week

* Review of differential equations: problems 84, 111 from the compendium.
* Linear algebra problems:
52 (note that the 1 vector is a row here - I would have denoted it 1').
55, the rest.
59, the rest
69 - use row operations (like in Gaussian elimination) to calculate the determinant.
and - this is a difficult one at this stage, do not worry if you have to spend a lot of time on it: problem 139, where you in parts (a) and (b) solve for the inverse using Gaussian elimination.