If A = {-1, 1}, Find A×A×A

If \(A=\{-1,1\}\), Find \(A\times A\times A\)

Question

If \[ A=\{-1,1\}, \] find \[ A\times A\times A. \]

Solution

Given:

\[ A=\{-1,1\} \]

The Cartesian product \[ A\times A\times A \] is the set of all ordered triples \((a,b,c)\) where \[ a,b,c \in A. \]

Thus, all possible ordered triples are:

\[ A\times A\times A= \{ \]

\[ (-1,-1,-1), (-1,-1,1), \]

\[ (-1,1,-1), (-1,1,1), \]

\[ (1,-1,-1), (1,-1,1), \]

\[ (1,1,-1), (1,1,1) \} \]

Therefore,

\[ \boxed{ A\times A\times A= \{ (-1,-1,-1), (-1,-1,1), (-1,1,-1), (-1,1,1), \]

\[ (1,-1,-1), (1,-1,1), (1,1,-1), (1,1,1) \} } \]

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