WolframAlpha http://www.wolframalpha.com/
Yeah I’ve seen this before, it is quite clever 
Good for maths 
It is very useful. I just got the app, it takes some getting used to.
I wish it worked by speech, and talked back to me, like night rider.
I heard he may write in a predictive dialer script.
Wolfram is an interesting guy. He thinks the Universe is generated by a very simple algorithm that he thinks is discoverable by an exhaustive search of program space. That’s what makes me describe him as “Interesting” ???
Yup, I remember that I read about that a while ago, but I forgot to come back and see what’s new about that after a while