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Monday, August 6, 2007

Everything I had to know

Still tired, grumpy and stuck on question 4 of assignment 4. It's the matrix equivalent of proving the convergence of the infinite sum Σan when |a| < 1. I've resorted to working on the scalar case to try and understand the problem better, and so far it's going nowhere at all.

I did the first three questions by saying "look, the hypotheses of theorem 3.10 are satisfied" three times in a row. It wasn't really very satisfying.

Today Chris spent most of the lecture doing what was effectively an example of constrained optimisation without using Lagrange multipliers. I suspect this is going to meld imperceptibly into a development of the theory of Lagrange multipliers, but all that today's example really showed was why we need the things to save us from horrible algebra.

2 comments:

lorne said...

All we hear is Radio Ga Ga!

Gael said...

Indeed we do!

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