Some really useful stuff here.
Visit as frequently as you can.
See the following pages:
Animated Sine
Trigonometric functions
Conversion: Radians and Degrees
Straight lines -
Parabolas -
Quadratic function -
My entire functions & graphs collection.
The coming test:
The Chinese kids and trigonometry,
and the strategies to prove an identity.
Click here for our tests schedule!
You can any time,
or call me at 054-4644515, even though
I sometimes close my cell phone, since
doctors & hospitals don't like it.
I do miss you all.
ICQ # 1400362
Visit the Math Links Page in my site !!!
For plotting graphs of functions download:
free MathGV , or
free WinPlot from me or from its homepage
Class: 1994 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
