Today was the numbers exam.
I arrived to find a gratifying number of mates smoking in the car-park. So things started well, once I opened my paper things changed; for some reason my mind turned to mush.
There was a question along the lines of: prove gcd(4n + 3, 4n - 1) = 1. I couldn't see a way to do this. This is so basic that I'm embarrassed.
[Let d = gcd(4n + 3, 4n - 1), then d divides
4n + 3 - (4n - 1) = 4 and as both 4n + 3
and 4n - 1 are odd d = 1]
This is something that I've done hundreds of times and should be second nature, why did I freeze?
The entire exam was littered with moments like that. Under pressure it seems that I crumble intellectually.
Am I down? Not really, I will get enough marks to either get a free resit or I will pass; either is good:
- I pass, then it's over
- I resit, the groups showed me that it is possible to get a better mark than you might originally have gotten
I've always been a game-player, and the thought occurs that aiming for a re-sit may be a viable option. Is it indeed the best option?
Anyhoo, for me, for now, the maths is over. Now all I have left is the the computers.