how to define a more complicated function

From: Feng Shengqin (fengsq@iopp.ccnu.edu.cn)
Date: Thu Dec 02 1999 - 15:38:59 MET 

 Hello all,
 
 I have a question to ask,if I want to draw a complicated function,for
 example including some integral function of x and y,how to read this
 function using TFormula?
  
 form1 = new TFormula("form1","fun2(x,y)");

 the fun2(x,y) is very difficult to define using only one line.
 
 In your ROOT Tutorials,you only define a very simple function,
 
 form1 = new TFormula("form1","abs(sin(x)/x)");
 
 Best regards, Shengqin
 
 ---------------------------------
 Institute of Particle Physics
 Hua-Zhong Normal University,Wuhan,China
 email:fengsq@iopp.ccnu.edu.cn
 ---------------------------------------

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