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Question

(a^{- 1})^{- 1}

এর মান নিচের কোনটি সঠিক?

\frac{1}{a}

a^{2}

\frac{1}{a^{2}}

ANSWER : 3

Descrption

(a - 1) - 1 = (1/a) - 1 = 1/(1/a) = a
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