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If * is a binary operation on set R of real no.s defined by a*b=a+b-4,then find the identity elt for binary operation *.

Ravi Jha , 8 Years ago
Grade 12
anser 1 Answers
Saurabh Koranglekar

Last Activity: 5 Years ago

Dear student

Given. a*b=a+b-2
let the Identity element be e
a*e = a = e*a
a*e = a
a+e-2 =a
e-2 =0
e = 2
so the Identity element is 2

Regards
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