Write the identity element for the binary operations * on the set `R_0` of all non-zero real numbers by the rule `a*b=(a b)/2` for all `a ,\ b in R_0`

Explanation

The given binary operation is `a^{*} b=a b / 2`

And from the definition of identity element e,

`a^{*} e=a ldots ldots . .(i)`

We have,


`a^{*} e=a e / 2`


Thus from (i) & (ii),
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