Editor’s note: This was sent to [GAS] contributor JLister today. John, you’re one lucky geek.
And for those who don’t get it right away:
I think is is pretty obvious and you don’t need to cheat explanation at the bottom of the page, or maybe post the answer upside down. :)
I solved the equation, but didn’t look at the graph, so I appreciate seeing it on the bottom of the page.