Pls maintain a Math File according to these requirements:
Math File (Sec 2).pdf
1st File Check: Fri 22/1 (2P1), Tue 26/1 (2P2)
2nd File Check: Fri 25/2 (2P1, 2P2)
Contributions to http://choosgs2math.wiki.hci.edu.sg/ are licensed under a
Creative Commons Attribution Share-Alike 3.0 License
Turn off "Getting Started"