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 February 6th, 2019, 07:04 AM #1 Newbie   Joined: Feb 2019 From: home Posts: 5 Thanks: 0 Mathematics Who first introduced the symbol $x^{-1}$ for reciprocal of a number x? Kindly provide some website link to support your answer. Last edited by skipjack; February 6th, 2019 at 09:44 PM.
 February 6th, 2019, 02:31 PM #2 Senior Member   Joined: Feb 2016 From: Australia Posts: 1,790 Thanks: 629 Math Focus: Yet to find out. There are lots of overlaps with this notation. Can you be more specific? Maybe start here: https://en.wikipedia.org/wiki/Histor...tical_notation https://en.wikipedia.org/wiki/Multiplicative_inverse
 February 6th, 2019, 09:41 PM #3 Global Moderator   Joined: Dec 2006 Posts: 20,472 Thanks: 2039 Thanks from Maschke

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