I didn't actually read page one if I'm honest, I just joined in
![Very Happy :D](./images/smilies/icon_biggrin.gif)
But then, why put the direction, when you should always be able to tell just by which number it is? That's about as pointless as a condom machine in the Vatican.
Because most people wouldn't know what congruence modulo 4 is. In fact, I'd suggest using left and right instead of the relatively uninformative sideways, to encode the derivative. In other words, you won't have to look at the previous post to figure out whether to go up or down. Let's go clockwise because it's what most clocks do: right, down, left, up, repeat.ConVicT wrote:But then, why put the direction, when you should always be able to tell just by which number it is?
What chrisd said.ConVicT wrote:That's about as pointless as a condom machine in the Vatican.
No, that would be down from experiment, not sideways :pchrisd wrote:32. Theory (right).