Chii chinoratidza kuti pane nhamba mbiri dzisina mufungo apo kusimudza imwe kumasimba yeimwe kunoguma nenhamba ine mufungo?
Heuno uchapupu hwokuti pane nhamba mbiri dzisina mufungo a na b dzakadai zvokuti a ^ b ine mufungo. Kutanga, rangarira kuti a = b = sqrt ((2). Yeuka kuti sqrt ((2) isingaverengeki, saka Kana a^b = sqrt ((2) ^ sqrt ((2) inonzwisisika, tapedza nokuti tawana zvisingaverengeki a uye b na a^b kuva nhamba inonzwisisika. Zvikasadaro, sqrt(2) ^ sqrt(2) haisi pfungwa. Regai a = sqrt(2) ^ sqrt(2) uye b = sqrt(2). Zvadaro a ^ b = (sqrt(2) ^ sqrt(2)) ^ sqrt(2) = sqrt(2) ^ (sqrt(2) * sqrt(2)) = sqrt(2) ^ 2 = 2, izvo zvine musoro. Saka nenzira ipi neipi, tinogona kuwana a na b zvisingaverengeki na a ^ b ari rational.