  
 Integral 0 to 2 exp(x)dx   
 
 yn(0) =    
 
    0.87725  
 
 yn(i)   
 
    0.87739  
 
 yn(i)   
 
    0.87738  
 
 yn(0) =    
 
    0.84571  
 
 yn(i)   
 
    0.84581  
 
 yn(i)   
 
    0.84581  
 
 The exact value is of y(0.2):    
 
    0.84579  
 
 The error is :   
 
  - 0.00001  