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  • 16-04-2024
  • Mathematics
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Two strategies to explain why (a‐¹)‐¹ = a

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reinhard10158
reinhard10158 reinhard10158
  • 16-04-2024

Step-by-step explanation:

(a^b)^c = a^(b×c)

so,

(a^(-1))^(-1) = a^(‐1×-1) = a¹ = a

a^(-1) = 1/a

(a^(-1))^(-1) = 1 / 1/a = 1/1 / 1/a = (a×1)/(1×1) = a

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