Question 10
Binary OperationsIf m∗n = m/n − n/m for m, n ∈ ℜ, evaluate −3 ∗ 4
- A.−25/12
- B.−7/12
- C.7/12
- D.25/12
Show the answer and explanation
Answer: C (7/12)
Explanation
−3 ∗ 4 = −3/4 − 4/(−3) = −3/4 + 4/3 = (−9 + 16)/12 = 7/12.
If m∗n = m/n − n/m for m, n ∈ ℜ, evaluate −3 ∗ 4
Answer: C (7/12)
−3 ∗ 4 = −3/4 − 4/(−3) = −3/4 + 4/3 = (−9 + 16)/12 = 7/12.