A binary operation on the real set of numbers excluding -1 is such that for...
MATHEMATICS
JAMB 2008
A binary operation on the real set of numbers excluding -1 is such that for all m, n ∈ R, mΔn = m+n+mn. Find the identity element of the operation.
- A. 1
- B. zero
- C. -1/2
- D. -1
Correct Answer: B. zero
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