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MATHEMATICS

JAMB 2020 - Question 10

Mathematics 2020 JAMB Past Questions - Question 10: If m * n = [mn − nm] for m, n belong to R, evaluate − 3 * 4

Choose the most appropriate option for the gap .

If m * n = [mn − nm] for m, n belong to R, evaluate − 3 * 4

A: -25/12

B: -7/12

C: 7/12

D: 25/12

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Correct Answer

Explanation

M * n = m/n - n/m-3 * 4 = -3/4 - 4/=3 = -3/4 + 4/3= -9 + 16/ 12 = 7/12