Discussion
Inverse operation of logarithm is
Answer: D
Logarithm and exponential are inverse operations:
\[ \log_{a}(a^{x}) = x, \qquad a^{\log_{a} x} = x \]
A logarithm asks "to what power?", and exponentiation supplies that power - each undoes the other. Taking antilogs is exactly this exponentiation.
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