chwala
				
				
			 
			
	
	
	
		
			
				
					
					
					
					
					
					
					
					
						
		
	
	
			
		
		
			
			
				
							
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- Does it matter where the constant is placed or is it placed accordingly for convenience? ...to avoid working with negative values? 
 
 Why not work with,
 
 ##y^2+(x^2+1)y-3x^3+k=0##
 
 then,
 
 
 
 ##y^2+(x^2+1)y-3x^3=-k##
 
 then proceed to apply the initial conditions?
My interest is on the highlighted part in red under exact_2 page.
				
			 
 
		 
 
		