Thank you!
In the Answer Format Help for Intervals, it does not explain how to enter the answer when the interval is only one point p. From what I understood playing around with it, this can be entered both using {p} or the closed interval [p,p]. It would be nice if that were explicitly addressed in the Answer Format Help pop-up. Is that something that could be easily added to it?
Hi Daniele,
Thank you for bringing this to my attention. I have added one point intervals to the help page:
Best regards,
Paul Pearson