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when toggle format what by license comment
Sep 18, 2016 at 1:41 comment added Richard Stanley @T. Amdeberhan Good point. This has been corrected.
Sep 18, 2016 at 1:40 history edited Richard Stanley CC BY-SA 3.0
changed $x\geq 0$ to $x\geq 2$
Sep 18, 2016 at 1:23 comment added T. Amdeberhan $x\geq2$ or $x\geq0$?
Sep 18, 2016 at 1:01 history answered Richard Stanley CC BY-SA 3.0