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find the identity element of the binary operation * defined on A= Q - open curly brackets 1 close curly brackets by the rule a*b = a - b + ab for all a,b element of A . Hence find the invertible elements of A.
I was trying to post a question on Ask the Expert feature on the site of topper learning to get a complete solution and to see my earlier questions posted there but  I regret to inform that the feature is again not working and I am not able to post my questions nor view my earlier questions.
Pls take up the matter at your end with the technical team so that I can post questions and get complete answers

Asked by ahuja8087 21st March 2017, 2:06 PM
Answered by Expert

Hi Ahuja,

Here is your solution.

Error converting from MathML to accessible text.

Regarding the Ask the Expert. I will surely forward your query to our tech team. Thank you informing us about the issue. And really sorry for the inconvenience. You have really been cooperative.

Answered by Expert 21st March 2017, 6:13 PM
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