Long time no write. I am attaching a Mathcad v14 file where I am attempting to solve the required insulation thickness using temperature and insulation splined functions. I know this is a multiline curve fit. At the bottom, you will notice two functions. If I disable the one on the left and turn on the one on the right, the graph works. As a by product, I will then need to figure out why the function generates a [2,1],1 vector
Updated file. Had "t" defined multiple times from another sheet I worked out. Still not getting a single answer when fixing the thickness and time
Can you update the file to show me. I had a similar problem before, but cannot find the filewith my notes on how to do it. I am attaching a revised file.
See revised file
Message was edited by: ElSid to update and clean up the file