Hello. In our math lessons, we are laerning about monotonicity within different graph and hereby, we are also working with making a line, describing when the graph is increasing or descreasing (I have uploaded a picture along to describe). 

I havent been able to find any easy way to make a monotonic line within maple, where i dont have to draw them in. This is problematic and will end up taking me a long time in each assignment where its needed. 
Kinds regrads. Samuel Hesselberg

Hello everyone! I have found this document from Maple 18 (2014) that will be very usefull for my school work, but when i copy it into Maple 2022 i get the error message, "action, does not evaluate to a module" Is there any way for me to fix this? What i have been able to read is that i have to go in and update the code, but i have absolute no idea on how to do it? 

Kind Regards Samuel 

Regressionmodeller._Skal_laves_til_maple_22_og_23.mw