A binary operation `**` on `QQ` the set of all rational numbers is defined as `a**b=(1)/(2)ab` for
Channel: Doubtnut
Date: 2020-05-09

A binary operation `**` on `QQ` the set of all rational numbers is defined as `a**b=(1)/(2)ab` for all `a,binQQ`. Prove that `**` is commutative as well as associative on `QQ`.