Yes, @vdelecroix, in these cases this might be a very good option. sage: list( [x,y] for x in range(1,10) for y in range(1,10) if x+y==15) [[6, 9], [7, 8], [8, 7], [9, 6]]
For a more general setting, normaliz, 4ti2 and other approaches are better; some are available in sage as pointed above. On Sunday, April 19, 2020 at 10:40:22 AM UTC+2, vdelecroix wrote: > > In this particular instance, I would rather write down the loop. > It is not hard to make the loop general for any bound on x and > y and any sum. > > sum = 15 > xmin = 1 > xmax = 9 > ymin = 1 > ymax = 9 > for x in range(max(xmin, sum-ymax), min(xmax, sum-ymin)+1): > print(x, sum-x) > > which does run through > > 6 9 > 7 8 > 8 7 > 9 6 > > > Le 17/04/2020 à 18:55, Bert Henry a écrit : > > I have the equation > > x + y = 15 > > an I'm looking for solution only in the range x=1..9 and y=1..9, x and y > > both integer > > Is there a sage-command to do that? > > > > Thanks in advance > > Bert Henry > > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/76e034a0-558a-4cc3-9161-18013af2634f%40googlegroups.com.
