A binary operation * is defined on the set of real numbers R, by a* b = -1. Find the identity element under the operation *.
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Correct Answer: Option A
Explanation:
\(a * a^{-1} = e = -1\)
\(\therefore a^{-1} = -1\)
\(a * a^{-1} = e = -1\)
\(\therefore a^{-1} = -1\)