Hello,

I have defined a piecewise function, and then i derive that function and take the arctan of it. However for x=5, which is the maximum x value for the piecewise function, it shows "Float(undefined)".I have attached images at the bottom. I havent been able to figure out why this happens and i would appreciate any help. Also, does somebody know why the following error appears when i try to upload the .mw file? 

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/crimp_versuch_tagentenstetig.mw .

Download crimp_versuch_tagentenstetig.mw

Hello all,

at the beginning of my document I need to assign a value to my variable, for example 0.4, so I can calculate a number of material pararamters for this exact value. At the end I want to include a plot that demonstrates the material behaviour for the variable ranging from 0 to 1. 

However, I have found that I can not plot a graph if I have assigned a value to that variable before. The "unassign" command sadly does not work. 

I am a beginner in Maple so i am probably missing something obvious, but I would appreciate any help.

Thank you!