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May 21, 2017 at 20:44 comment added gnasher729 Take a graph as a hint what you might want to prove. That hint may be wrong of course.
Mar 29, 2012 at 7:51 history edited Dave Clarke CC BY-SA 3.0
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Mar 27, 2012 at 18:50 history edited Dave Clarke CC BY-SA 3.0
added 8 characters in body
Mar 27, 2012 at 17:45 history edited Dave Clarke CC BY-SA 3.0
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Mar 27, 2012 at 17:39 history edited Dave Clarke CC BY-SA 3.0
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Mar 27, 2012 at 17:35 comment added Tsuyoshi Ito +1 for suggesting to draw graphs of the functions, although the linked graphs are rather confusing unless you know what they mean.
Mar 27, 2012 at 17:13 comment added Raphael Should we really recommend vodoo?
Mar 27, 2012 at 16:32 history edited Dave Clarke CC BY-SA 3.0
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Mar 27, 2012 at 15:51 history answered Dave Clarke CC BY-SA 3.0