In 2012, Vi Hart made this video giving "9.999… reasons that .999… = 1" She also made a video of bad proofs why .999… does not equal 1.
There's some interesting discussion about it at TYWKIWDBI.
In 2012, Vi Hart made this video giving "9.999… reasons that .999… = 1" She also made a video of bad proofs why .999… does not equal 1.
There's some interesting discussion about it at TYWKIWDBI.