I am trying to find particular solutions to my inequality for two positive integers $a$ and $b$:


However I want $a$ and $b$ to to be both above $10^3$. How may I achieve this? Is there a way to use Assumptions for this or some sort of magic along the lines of:

FindInstance[a<f[etc...]*b,{a,b},Integers,a>10^3 && b>10^3]

1 Answer 1


Put the constraint in the expression.

FindInstance[a < a*b && a > 10^3 && b > 10^3, {a, b}]
(* {{a -> 1001, b -> 1001}} *)

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