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Exponentials & Logarithms

Review question

Which of these four log expressions is the smallest?
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Ref: R9680

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Question

Which is the smallest of these values?

\(\log_{10}\pi\),
\(\sqrt{\log_{10}(\pi^2)}\),
\(\left(\dfrac{1}{\log_{10}\pi}\right)^3\),
\(\dfrac{1}{\log_{10}\sqrt{\pi}}\).