You could look at the slope of the line from one point to another and see
how it's changing.


"WAYNEL" wrote in message
oups.com...
Hi

Can anyone help me find asymptote from a set of data in two column x
and y that show the frequency responce of a say a freq. responce in
Excel?
Finding it from a function seem relatively easy but without a model for
the data is there a method of finding two lines that meet to produce
the turning point?


Cheers


WayneL