Beechen+Cliff+Matrices

Where are we?

26th May - we're trying to find the inverse of any 3x3 matrix - some of us are getting there and can confidently do it - others still need a bit more time...

Where are we going? Can we use what we know about inverses of 3x3 matrices to solve simultaneous equations in 3 unknowns like...

2x + 3y - z = 19 3x - 2y + 5z = 22 x + y + z = 12 .....

9th June - only four of us today (sob!)

But - we're pretty close to finding the inverse of ANY 3x3 matrix, although it is a bit of a pain...

The plan now is to start making a presentation about it...

16th June

Just 3 of us today! But Finlay has joined the Wiki which is nice..

Tom is going to try to explain how to find the inverse of a 2x2 matrix - hopefully he'll post it up here within the next half hour

Joda is going to find some more useful websites about matrices

Finlay is going to use matrices to solve simultaneous equations in 2 (or 3) unknowns and try to put his results on here.

I (Mr Gill Maths!) am going to research the theorem of Sarrus.... see other entry