Common Logarithm/Examples/1000

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Example of Common Logarithm

The common logarithm of $1000$ is:

$\log_{10} 1000 = 3$


Proof

\(\ds 1000\) \(=\) \(\ds 10 \times 10 \times 10\)
\(\ds \) \(=\) \(\ds 10^3\) Definition of Integer Power
\(\ds \leadsto \ \ \) \(\ds \log_{10} 1000\) \(=\) \(\ds 3\)

$\blacksquare$


Sources