Can be done with Solver
Would take to long to explain
Send me (my private email NOT to newsgroup) a sample file
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
remove caps from email

"RH" wrote in message
...
I would like to know that is it possible to draw a SIN function trend line
in
Excel chart, as it is not in trend line available options. or any
suggestions
how to do it using excel for a long range of data...