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when toggle format what by license comment
Oct 19, 2020 at 6:49 answer added user131781 timeline score: 1
Apr 2, 2018 at 15:07 history edited David Handelman CC BY-SA 3.0
non is NOT a word (in English)
May 29, 2016 at 17:26 history edited Robert Bryant
edited tags
May 29, 2016 at 11:26 vote accept Sylvain JULIEN
May 29, 2016 at 10:54 answer added Robert Bryant timeline score: 19
May 29, 2016 at 9:44 history edited Sylvain JULIEN CC BY-SA 3.0
added 4 characters in body
May 29, 2016 at 9:44 comment added Sylvain JULIEN You're right, "non trivial". I don't require the solution to be smooth though, just that the second derivative is defined and continuous for all $x$.
May 29, 2016 at 9:32 history asked Sylvain JULIEN CC BY-SA 3.0