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[tex] \sqrt (n) [/tex] for every natural number n

- the same but for [tex] n^{1/m} [/tex] where n and m are positive integers

- given a segment of length a known can we find an exact segment of length [tex] a 2^{-1/2} [/tex]

for the case m=2 using Pythagorean theorem is easy to find but what about the other cases.