The correct option is B 1 ( 1)^ 3 = 1/( 1)^3 (∵ a^ m = 1/a^m) ( 1)^3 = ( 1) × ( 1) × ( 1) = 1 × ( 1) = 1 Hence 1/( 1)^3= 1/ 1 = 1 ...

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(-1)^-3 is : ...

Question

$(- 1)^{- 3}$ is :

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-1

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Solution

The correct option is B
-1

$(- 1)^{- 3}$ = $\frac{1}{(- 1)^{3}}$ ( $∵ a^{- m} = \frac{1}{a^{m}}$ )
$(- 1)^{3}$ = (-1) × (-1) × (-1)
= 1 × (-1)
= -1
Hence
$\frac{1}{(- 1)^{3}}$ = $\frac{1}{- 1}$ = -1

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