Question

Does anybody know what this symbol means? (Posted below in a minute.)

Answer 1

Apologies, hardware issues. One minute.

Answer 2

The tilted double bar across the y-axis is what I'm referring to. It's at a point where the function is undefined, but I'm not willing to assume it's just some wonky sort of equivalent of an open circle.

Answer 3

(But is it just that? Just a way to notate where something is undefined instead of an open circle?)

Answer 4

I think that's just a notation to mention that the scale shifts. If you'll notice, below that double bar you have the origin, and above it, the scale immediately starts at 2.5 and continues in regular intervals of .5. The double bar marks that some of that was skipped.

Answer 5

Oh, thanks. That's kind of really weird. It was an automatically generated graph, so I guess that explains it, but I can't think of an actual, legitimate reason that the scale change was necessary.

Answer 6

Sorry, starts at 2.0

Answer 7

No worries, I got your drift.

Answer 8

It's not really necessary except to make things look nicer. If, for example, it started at 10,000, and you had to continue with small intervals of .5, you wouldn't want to look at a gigantic graph all the way from the origin to 10,000.