It's not nothing, however, that Wolfram Alpha works spectacularly well on a phone. The mobile app even has a very useful keyboard that has common math symbols. With mobile data, at any given time, I'm much more likely to have a computing device with an internet connection than I am to have one with a useable programming keyboard.

Not that I'm against the progression of these tools, far from it, I just think that wolfram alpha does a better job at math homework type problems for most people most of the time. If you have more complicated modeling/statistical/etc. work, then bring out the bigger guns.