Math textbooks that are free and can be read online or can be downloaded as ".pdf" :
https://open.umn.edu/opentextbooks/SearchResults.aspx?subjectAreaId=7
Enjoy :oldsmile:
I knew what a question was but, could only guess what a "cold one" was after reading your article, perhaps a question is cold when it is without reference or context etc.
I googled cold question as suggested...
Hello! I am a new member at https://physicsforum.com
This is it! This is the place I was looking for. Yay !:oldsmile:
Hoping to participate in future discussions at the forum.