1) read Help to learn about Trendlines - make an XY chart first
2) visit my site to learn about LINEST to find polynomial coefficients
http://www.stfx.ca/people/bliengme/E...Polynomial.htm
3) to lean about charting - buy a book or visit
http://peltiertech.com/Excel/ChartsHowTo/index.html
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
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"DianeD" wrote in message
...
I have a data set the I want to evaluate using quadratic and cubit fits-
can
someone provide the proper equations? Adn what about plotting the
funtions?