It is possible to fit almost any function using Solving
Email me at my private address for more
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
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"Solis" wrote in message
...
I need to obtain a sin/cos trendline from a series of data I have. The data
shows obvious cyclical/wave properties to which a sin/cos trend would fit
perfectly. Is there a patch for this or some way to do it on Excel?