See
http://www.tushar-mehta.com/excel/ti...efficients.htm
It is long but has all you need

http://people.stfx.ca/bliengme/ExcelTips/Polynomial.htm
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
www.stfx.ca/people/bliengme
remove caps from email

"katy" wrote in message
...
I did plot a graph from the data, ( which is a curve) i want to know that
how
can i obtain the equation (without adding the trendline), so that i can
generate the values that are according to my graph~