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Apr 8, 2018 at 9:15 history edited Robert Israel CC BY-SA 3.0
deleted 4 characters in body
Apr 8, 2018 at 9:14 comment added Robert Israel Oops, yes. Editing
Apr 7, 2018 at 2:44 comment added Ludwig Perhaps, shouldn’t be $b^k$ instead of $(-b)^k$?
Apr 4, 2018 at 8:23 history edited Robert Israel CC BY-SA 3.0
added 8 characters in body
Apr 4, 2018 at 2:54 vote accept Ludwig
Apr 4, 2018 at 0:10 history undeleted Robert Israel
Apr 4, 2018 at 0:10 history edited Robert Israel CC BY-SA 3.0
added 55 characters in body
Apr 3, 2018 at 23:46 history deleted Robert Israel via Vote
Apr 3, 2018 at 23:45 history answered Robert Israel CC BY-SA 3.0