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when toggle format what by license comment
May 27, 2020 at 17:18 comment added Pietro Majer if one wants a strictly decreasing example, adding 1/x to your f(x) will do it
May 27, 2020 at 16:35 vote accept Alex
May 27, 2020 at 16:22 history edited Willie Wong CC BY-SA 4.0
added 495 characters in body
May 27, 2020 at 16:16 history answered Willie Wong CC BY-SA 4.0