Software for solving any math problems?

I remember what software that could do any math problem from algerbra, geometry, algerbra 2, trigonometry, calculus etc. I just had forgotten what that software was called. I do not intend to use this to cheat but for to help understand what problems I cannot solve. It was like a paid version for these softwares but then it was in warez.
Answer #1
I don’t know of any software, but you can use WolframAlpha to solve equations:
http://www.wolframalpha.com/