The way I find windows

Usually to find a good viewing window for any equation, especially if the graph does not even cross the standard viewing window, is to use the trace key to find a point on the graph. After you find a point on the graph create a window centered around this point of a decent size. Atleast now you have a window with the line in it. From here you can tweak the window to best fit your use. It is not the quickest or neatest way to do it, but i find that it works just fine.