From: drhuang57@gmail.com   
      
   u can try    
   mathHandbook - Online symbolic math software   
   mathHandbook.com    
      
    It is an online symbolic math and computer algebra system.  It can perform   
   exact, numeric, symbolic and graphic computation, e.g. any order of   
   derivative, fractional calculus, solve equation, and user-defined functions,   
   linear regression, symbolic    
   differentation and integration, pattern-match. It is a programming language,   
   in which you can define conditional, case, piecewise, recursive, multi-value   
   functions and procedures, derivatives, integrals and rules.    
    It runs in any computer that supports Java. If you see it online, it can run   
   offline in your computer. It is all of Java applet, Java application and   
   Window application. Run MathHandbook.htm as Java applet, run MathHandbook.bat   
   as Java application, or    
   run MathHandbook.exe as Window application.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)