

If the forum does permit you to post a URL (yet), spell it out manually. You might like because it uses the same login as this forum. If the forum does not permit that (yet), upload the file to a file-sharing website and post the download URL here. Ideally, attach an example Excel file by clicking "browse" at the bottom of a edit window.

Quicker and better answers come when you include a concrete example. I hope there is a more straight forward solution. I have an excel chart that plots a logarithmic trendline based on a table with data For example, if the trendline equation is y=-0.407ln(x)+5.7609, I want the user to be able to enter an x value (quantity) in one cell and another cell outputs the corresponding y value (unit price).
