Common Logarithm/Examples/0.06573
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Example of Common Logarithm
The common logarithm of $0 \cdotp 06573$ is:
- $\log_{10} 0 \cdotp 06573 = \overline 2 \cdotp 8178 = -1 \cdotp 182$
Proof
\(\ds 0 \cdotp 06573\) | \(=\) | \(\ds 6 \cdotp 573 \times 10^{-2}\) | using scientific notation | |||||||||||
\(\ds \leadsto \ \ \) | \(\ds \log_{10} 0 \cdotp 06573\) | \(=\) | \(\ds \map {\log_{10} } {6 \cdotp 573 \times 10^{-2} }\) | |||||||||||
\(\ds \) | \(=\) | \(\ds \log_{10} 6 \cdotp 573 + \log_{10} 10^{-2}\) | Logarithm of Product | |||||||||||
\(\ds \) | \(=\) | \(\ds 0 \cdotp 8178 + \paren {-2}\) | Common Logarithm of $6 \cdotp 573$, Definition of Common Logarithm | |||||||||||
\(\ds \) | \(=\) | \(\ds \overline 2 \cdotp 8178\) | Notation for Negative Logarithm | |||||||||||
\(\ds \) | \(=\) | \(\ds -1 \cdotp 182\) |
$\blacksquare$
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): logarithm (log)
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): logarithm (log)