Google Inc. (NASDAQ:GOOG) has rolled out graphing calculator features within their search engine. This seems to be a move to further compete against Wolfram Alpha, a search engine that supports complex math problems. When using the Google search engine, you just need to type in a math function and Google will return graphs that match the function correlated by color. The screenshot above has a graph that matches: x/2, (x/2)^2, ln(x), sin(?*x/5).