Just playing with the traditional Graphing Calculator in MacOS 9, and was running through the inequalities demo, and it provided the equation:
(cos (theta - r) - sin (theta))(r^4 - 2r^2cos(2theta + 2.4) + 0.9) + (0.62r)^1000 < 0
When you graph that equation, it creates a ying-yang. There are lots of other inequality equations that make really interesting and aesthetically pleasing graphs. Wow.
Current Mood: amused