Sunday, October 16, 2016

Problem concerning a rational number

Here's an interesting problem from number theory.

Which positive rational numbers have the property that the sum of the number and its reciprocal is an integer?

A little bit of experimentation will probably lead you to the answer. But it would be interesting to find one's own proof for that answer.

I have written up my analysis of the problem in the following PDF file: Problem about a rational number.

Do have a look at it. Your comments would be very welcome.

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