The exponential fit in Excel isn't really doing what I want it to do (the fitted exponential is clearly upside-down in the first graph) and I was wondering if there was an easy way to fix this or an explanation as to why it won't fit it the way I would like it to.

I had a quick fix which involved transforming the data (the second graph).

`log`

:)`solver`

to fit, say,`y=a-b*exp(c*x)`

to the data.7more comments