- #1
Logik
- 31
- 0
My teacher gave us as excercices this:
I'm pretty certain you have to prove it by contradiction, but I don't get how to represent to periodic decimal expension in a proof?
Any hint is welcome, thanks in advance.
Prove that a number is rational if and only if from some point on its decimal expansion becomes periodic.
I'm pretty certain you have to prove it by contradiction, but I don't get how to represent to periodic decimal expension in a proof?
Any hint is welcome, thanks in advance.