I am posting for my son, who needs the full readout for a formula, more than what a small graphing calculator can do. Is there such a program for that? Am I in the right place to get an answer for this? I need the numeric result of "2 times the inverted sign of 1 minus the inverted sign of 0." Does it go on forever or does it end? I would appreciate any help in this for my mathmatical skills are limited, and I would like to help my son who is in prison and does not have access to computers of any sort.