User:Ironchef


 * Help:Formula


 * $$\dot{x} = \frac{dx}{dt} = x'(t)$$
 * $$\ddot{x} = x''(t)$$


 * $$ (a+b)^2 = a^2 + b^2 $$

Sites
1. 开复学生网 http://www.kaifulee.com/

2. http://www.guoxue.com/ - http://www.guoxue.com/jinbu/13jing/liji/lijj018.htm

3. MIT's OpenCourseWare http://ocw.mit.edu

4. Statistics http://www.visualstatistics.net/ http://davidmlane.com/hyperstat/index.html

5. Projects Pymedia - http://pymedia.org
 * Python and MP3

Topics

 * 孔丘 - 礼记 - 学记

Misc
/TestThis