22-5-10

Going to Singapore for SIME 2010.
BTW I found several mistakes in the BAS so I may have to make another version 5.F...

Currently I also find difficulties in typing notes for Physics and Economics. The first one required a lot of experioenced example to deal with, while the second one requries lots of graphs. (I'm a bit lazy to produce graph precisely lol). Anyway I'll try to elaborate them =]