If * defined on the set R of real numbers by `a*b=(3a b)/7` , find the identity element in R for the binary operation *.

If * defined on the set R of real numbers by a*b=(3ab)/(7), find the identity element in R for the binary operation *

If * is defined on the set R of all real numbers by a*b=sqrt(a^2+b^2) , find the identity element in R with respect to *.

If * is defined on the set R of all real numbers by a*b= sqrt(a^2+b^2) , find the identity element in R with respect to *.

If * is defined on the set R of all real numbers by a^(*)b=sqrt(a^(2)+b^(2)), find the identity element in R with respect to *

If * is defined on the set R of all real numbers by *: a * b = sqrt(a^2 +b^2) , find the identity element, if exists in r with respect to *

Define identity element for a binary operation defined on a set.

Define identity element for a binary operation defined on a set.

Let * be a binary operation defined on the set of non-zero rational number, by a**b = (ab)/(4) . Find the identity element.

If the binary operation * on the set Z of integers is defined by a * b=a + b - 5 , then write the identity element for the operation * in Z.