POLI_N.DLL
 Plugin for FindGraph.exe (www.uniphiz.com/findgraph.htm)
 *
 **************************************************************
 
 How to use: 
	Place DISTLINE.DLL in the program FindGraph subfolder "Appr".
	Start FundGraph.
	Start The Wizard of approximation.
	On step 2 select 'User defined function'.
	If all right, on step 3 your function will appear in list.

 Approximation function:
	V(U) = A0 + A1*U + ... +An*U^N
        Find the line that minimizes the perpendicular distance 
        between line and points.
	This is so called 'Deming regression'. It fits a polynomial 
        line assuming equal experimental errors in both U and V. 
        In contrast, ordinary regression assumes that the U values 
        are known precisely and all the experimental error is in V.
	Important, U and V must be in the same units. 

 Parameters:
	If 1, fixed point (U0, V0) on resulting line.
	N = pow of polynomial approximation in limits from 0 to +4
 
 Example: 
        N=1, U0=0, V0=0
	V(U) = A0 + A1*U

 Questions:
       Sergey Vasilyev
       serg@uniphiz.com