...Having not taken the subject since about 1980. It took me two months to refresh my memory. I could remember solving a system of linear equations by elimination but could not remember solving a system of linear equations by substitution. (read more)
...Currently, I am a STEM professor (adjunct) at Reading Area Community College. To me, math is history, art, poetry, nature, and the search for a divine fingerprint. But frequently it presents itself as frustrating confusing problems that make your head spin. (read more)