http://detexify.kirelabs.org/classify.html http://detexify.kirelabs.org/classify.html that will yield a TeX symbol which can trivially be transformed into somet

http://detexify.kirelabs.org/classify.html http://detexify.kirelabs.org/classify.html that will yield a TeX symbol which can trivially be transformed into something acceptable into most of the engines (e.g. Sage, Octave, etc) for evaluation. It's not "evaluate definite integral (0,5] for .." but it'll get you half the way there. PS. Cheating on TI's is trivial. If you're a math professor, adopt a no graphing calculator rule. (You can still cheat on your standard secretary's 20$ calculator, especially in the age of low-power Cortex M0+'s, but it's somewhat less trivial. I'd imagine memorizing 5 or 6 rules on taking the derivative would be easier for someone capable of doing that. (Though if those tools had been around when I was in uni, I might have just done it for the sake of doing it.))