logarithmic derivative

(redirected from Derivative of the logarithm)

logarithmic derivative

[′läg·ə‚rith·mik də′riv·əd·iv]
(mathematics)
The logarithmic derivative of a function ƒ(z) of a real (complex) variable is the ratio ƒ′(z)/ƒ(z), that is, the derivative of log ƒ(z).
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The partial derivative of the logarithm of earnings implies that a reduction in the percentage of time actually devoted to lunch breaks for male workers from .
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