Hi all, I'm an old guy who loves Mathematics and Physics. I got my BSEE in 1986 but have since moved over to the dark side (software and firmware). I have always loved Math and Science (Physics in particular) so I try to keep up with it so I don't forget everything I learned in school. I do this merely for the love of math and science. I'm also a calculator and software geek so always have one or two of those up while reviewing and playing with problems . My current favorites are the HP Prime calculator and Maplesoft Maple 2016. There are lots of good calculators and software out there (I have quite a few) but these are my current favorites. Next month may be different :-) Thanks for putting together a great forum!