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when toggle format what by license comment
Jun 6, 2011 at 7:05 comment added Gerry Myerson The minus sign is inconsequential,just change $y$ to $-y$.
Jun 5, 2011 at 18:09 comment added shreevatsa Is the minus sign in Lewis's equation intentional?
Nov 3, 2010 at 22:55 history answered Gerry Myerson CC BY-SA 2.5