Use LINEST to get the values into cells
see;

http://www.tushar-mehta.com/excel/ti...efficients.htm
http://www.stfx.ca/people/bliengme/E...olynomial.html

--
Bernard V Liengme
www.stfx.ca/people/bliengme
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"pujiyono" wrote in message
...
How to calculate something using equation from Chart' directly?
I have some equation that gerenarted from the trendline in the chart
(Power
equation). The other iteration want to use the formula directly from the
chart. Somehow I don't know how to do that since I can't find in the Help.