A.I.M. Users Bulletin Board

[Qarel]

A bit boring, that error in my demonstration. The multiplications towards the end should have been divisions. Let's try again and be more direct:

[1] S * (pc-y) (Conrad)
[2] pc - y * (1+s) (Lichello).

We consider when both formula's are balanced, i.e. are zero. Then we get:

[3] pc - y = 0 (S<>0) (from [1]), and
[4] pc - (y * (1+s) = 0 (from [2]).

Combining [3] and [4] gives:
[5] y = y * (1+s) and throwing y out gives
[6] 1 = 1 + s

Which can only be true when

[7] s = 0

Conclusion: Conrad's method is mathematically equivalent to Lichello's method without Safe. Conrad's S is a scaling factor, Lichello's (1+s) is a translation factor.

Regards,

Karel