How to make Wolfram Alpha give me a range of possible answers for an equation if the subject is assumed to be an integer?

Question

I am trying to use Wolfram Alpha, and I am trying to get it to give me a range of possible answers for y=(391-x)/x, if y was an integer. However, there are two problems I face with this. The first is that I'm not sure as to how to tell WA that I want both my pronumerals to be an integers. I found this answer on how to do it but it seems to be outdated.

My second problem is that even if WA know that both x and y are positive integers, how would I tell it to give me a set of possible values for x and y in order to satisfy the equation?

If anyone can help me, please give me an answer. Thanks!

Are you sure you mean Wolfram Alpha and not Wolfram Mathematica? Enforcing assumptions on equations is problematic on the web one... — Radost Waszkiewicz, Feb 20 '19 at 09:52

score 4 · Accepted Answer · answered Feb 20 '19 at 09:52

4

Try solve y=(391-x)/x over the integers

answered Feb 20 '19 at 09:52

Infiaria

763

Well, thanks! This worked! – bio Feb 20 '19 at 09:54

How to make Wolfram Alpha give me a range of possible answers for an equation if the subject is assumed to be an integer?

1 Answers1