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mathFan
New Member

Ireland
1 Posts

 Posted - 04/26/2012 :  05:49:10 Hi,I've been reading the following pagehttp://www-history.mcs.st-andrews.ac.uk/HistTopics/Pell.htmlabout obtaining solutions to Pell type equations.I am struggling on how to use the information to work with5x+20=yIt is obvious that one solution is x=1, y=5The next solution is (4, 10) but I require x and y to be coprimeThrough brute force I know the next few solutions are (11, 25), (29, 65) and (199, 445).I just can't seem to use the information on the above page to obtain these solutions.A kick start would be greatly appreciated.Many thanks Edited by - mathFan on 04/26/2012 08:19:55

TchrWill

USA
80 Posts