(June 16, 2020 at 1:10 pm)polymath257 Wrote:(June 16, 2020 at 12:19 pm)Jehanne Wrote: Good videos here:
Khan Academy -- Does .9999 repeating equal 1?
I'd actually rate it as fair. The problem with
.99999.... = 1
Here's something more formal:
Wikipedia -- 0.999..
I agree with the formal proof, which is what I think that the author of the Khan video (who, appears to be, at the time at least, a PhD finalist in mathematics) was trying to convey:
![[Image: 0-999.jpg]](https://i.ibb.co/k2nLFrt/0-999.jpg)