Google has introduced a new graphing functionality on their search tool using which you can plot complicated mathematical functions by simply keying it in. Just type in a function and you’ll see an interactive graph on the top of the search results page.
You can zoom in and out and pan across the plane to explore the function in more detail. You can also draw multiple functions by separating them with commas. This feature covers an extensive range of single variable functions including trigonometric, exponential, logarithmic and their compositions, and is available in modern browsers.
[via Inside Search]