関連ワード:  1/root 2 is rational or irrational    1 root 2 is rational or irrational    1 root 2 is rational or irrational prove    1 upon root 2 is rational or irrational    1 divided by root 2 is rational or irrational    1 square root of 2 is rational or irrational    1/√2 is rational or irrational    is 1/root 2 irrational    is 1/√2 a rational number  
結果 : 1/root 2 is rational or irrational