## Proving or Disproving rational raised to rational is rational number

Im trying to either prove or disprove that if a and b are rational numbers, then a^b is also rational. I tried doing it with a contradiction, but i cant seem to correctly arrive at a solution. this is how i started the problem

defn of rational number: a,b = {m/n: m,n are all nonzero integers}
1. a^b is irrational (hypothesis/assumption)
2. b^b is irrational (from 1)
3. (m/n)^(m/n) (from defn. of rational number)
4. [m^(m/n)]/[(n^(m/n)] (algebra)

i'm stuck right here. i need to prove that an integer raised to a rational number is either rational or irrational. any inputs will be really helpful. thank you
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 Use a counter-example. Have you considered $$\sqrt{2}$$?
 i dont understand what you mean by "consider square-root of two". can you be more specific?

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## Proving or Disproving rational raised to rational is rational number

And then there is $1^1$.

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He means $2^{1/2}$.