If m n frac m n - frac n m for m n belong to R ... - JAMB Mathematics 1999 Question
If (mn = (\frac{m}{n} - \frac{n}{m})) for m, n belong to R, evaluate -34
A
\(\frac{-25}{12}\)
B
\(\frac{-7}{12}\)
C
\(\frac{7}{12}\)
D
\(\frac{25}{12}\)
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Correct Option: C
(m*n = \frac{m}{n}-\frac{n}{m}
= \frac{-3}{4} - \frac{4}{-3}
= \frac{-3}{4} + \frac{4}{3}
= \frac{(-9+16)}{12}
= \frac{7}{12})
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