Sounds like Chemistry!
How about using LINEST to get a polynomial fit (see
http://people.stfx.ca/bliengme/ExcelTips/Polynomial.htm)
Do a manual differentiation of this equation and use it to find the slope at
any point
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
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"nickelndime" wrote in message
...
How do i create a derivative plot?
I'm supposed to take reaction rates (slopes) from my graphs and enter in
new
columns in the spreadsheet...i'm confused
thanks