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Cologarithm

The Logarithm of the Reciprocal of a number, equal to the Negative of the Logarithm of the number itself,

\begin{displaymath}
\mathop{\rm colog} x\equiv \log\left({1\over x}\right)= -\log x.
\end{displaymath}

See also Antilogarithm, Logarithm




© 1996-9 Eric W. Weisstein
1999-05-26