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प्रश्न
Evaluate:
\[\left( \frac{- 1}{2} \right)^{- 1}\]
योग
उत्तर
\[\left( \frac{- 1}{2} \right)^{- 1} = \left( \frac{1}{- 1/2} \right)\] → (a−1 = 1/(a))
= -2
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