I mostly use it for one-off math queries that my TI-89 can't handle. (Or when my TI-89 is put away somewhere.) Most recently I've been using it for Laplace and

I mostly use it for one-off math queries that my TI-89 can't handle. (Or when my TI-89 is put away somewhere.) Most recently I've been using it for Laplace and Inverse Laplace transforms, they also recently added the ability to "show steps" when solving differential equations too which is neat. It's tremendously helpful for getting work done with the results instead of spending time trying to calculate them by hand. I'm still wondering what sorts of ramifications their "show steps" feature has for any math education where it's applicable, hopefully it's putting less focus on homework and more on testing.