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You are not logged in. #1 20080702 21:51:02
Solve in positive integers the cubicSolve in positive integers the cubic #2 20080703 00:07:19
Re: Solve in positive integers the cubicThe solution (obviously) is 13 but you know how Dirty n Untidy n Ugly the cubic equations are to solve!! If two or more thoughts intersect with each other, then there has to be a point. #3 20110729 20:43:45
Re: Solve in positive integers the cubicHi, "Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  Buddha? "Data! Data! Data!" he cried impatiently. "I can't make bricks without clay." #4 20110803 17:34:04
Re: Solve in positive integers the cubicHi; The discriminant of the right side is  472, so 13 is the only positive root. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #5 20120503 09:35:35
Re: Solve in positive integers the cubicAnother way is to use the method developed for solving a general cubic. It is given in a thread of mine and is available on the net. The limit operator is just an excuse for doing something you know you can't. “It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman “Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment 