Wolfram|Alpha

[dzreponse]

Part 1



Part 2



URL : http://www.wolframalpha.com/

Example :

Math : solve x^3 - 4x^2 + 6x -24 = 0
Physique : transformer 110V, 60Hz
Music : Who wrote Stairway to Heaven?
Autre : population algeria 1962, population algeria 2012