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when toggle format what by license comment
Nov 6, 2015 at 12:12 vote accept Michael
Nov 6, 2015 at 9:49 comment added Arthur Both Google and WolframAlpha accepts both inputs, but uses ^ when writing back to you. $\TeX$ only recognises ^. So that's slightly in favour of ^.
Nov 6, 2015 at 9:33 history answered Gregory Grant CC BY-SA 3.0