See
Trendline Coefficients and Regression Analysis
http://www.tushar-mehta.com/excel/ti...efficients.htm

and Bernard Liengme's
http://www.stfx.ca/people/bliengme/E...Polynomial.htm


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Regards,

Tushar Mehta
www.tushar-mehta.com
Excel, PowerPoint, and VBA add-ins, tutorials
Custom MS Office productivity solutions

In article ,
says...

Hi,
I just want to ask for assistance on how to calculate the constant
values on a given trend line (Non-linear). Basicaly standard equation is
Y = AX^2 + BX + C. How can I calculate A, B, C, from a given x's_arrays
and y's_arrays using excel (without the help from graph trendline).
Thank you.:)
Tom


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