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01:04
The community bot just bumped math.stackexchange.com/q/4126083 . It seems be a support question for Wolfram Alpha, and is therefore off-topic here. The answer also doesn't seem to really be an answer. I am going to close it, and would recommend deletion.
 
7 hours later…
08:08
close - solution verification without specific "I'm worried about this step"
 
7 hours later…
15:10
@XanderHenderson what should one do with someone who keeps on changing their question, while having already been given an answer?
I think in general an edit to a question which invalidates an answer should be reverted, and if the edit is redone by the OP, the question should be locked. An exception though is the case that the answer reveals that an important condition has been forgotten in the question, and the question becomes entirely trivial or uninteresting for this reason. — Stefan Kohl ♦ Jul 22, 2016 at 21:53
found this comment
I suppose I'll rise a custom flag if it keeps on repeating
 
4 hours later…
19:02
@XanderHenderson nods

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