From: drhuang57@gmail.com   
      
   How to use? There are 5 ways:   
       
   1.Input or click  sin(x) , then click the  button for derivative, click  again   
   for second derivative, click  to solve differential equation, click  to   
   differentiate solution for double check, click  for integration, click  to   
   inverse a function, click     
   for definition, click  to simplify, click ......    
      
   2.Input command, e.g.    
   ◦ integrate sin(x) as x from 0 to 1   
   then hit the  button or the ENTER key in your keybord.   
      
   3.Input function, e.g.    
   ◦ int(sin(x))    
   then hit the  button or the ENTER key in your keybord.   
      
   4.Input function by use of "," or ";" as separator for multistatements, e.g.   
   ◦ int(sin(x)), d(sin(x))    
   then hit the  button or the ENTER key in your keybord.   
      
   5.Input function and question mark ? to show its function source. e.g.    
   ◦ sin(x) ?   
   then hit the  button or the ENTER key in your keybord.   
      
      
   www.mathHandbook.com   
      
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