This surface was formed by taking the surface [math]z=\sqrt{\left|x\cdot\sin\left(x\right)\right|}[/math] and [math]z=-\sqrt{\left|x\cdot\sin\left(x\right)\right|}[/math] rotating them 45 degrees and - 45 degrees about the z-axis. [br][br]Does it make a better seat cushion or pool float?