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
My students keep in mind the constant 273.15.
I think that American students must keep in mind the constant 459.67.
Correct work with US temperature unit in an empiricl formula:
Valery, my equations are correct. Use t=14.7 minutes (~200F) and it gives the same answer. Test at t=27.7 minutes to and k=.499 which follows the curve. (NOTE: max temp is 530F)
I believe that I need a program instead of a solve block in the highlighted "yellow" sections below.
You would like to find a minimum of the function of one argument?
Ath first You must to create the function of this function.