April 2013
Intermediate to advanced
978 pages
28h 8m
German
book
Microsoft Excel: Formeln & Funktionen - Das Maxibuch, 3., aktualisierte und erweiterte Auflage
by Egbert Jeschke, Eckehard Pfeifer, Helmut Reinke, Sara Unverhau, Bodo Fienitz
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LN()
LN()
Syntax
LN(Zahl)
Definition
Die Funktion gibt den natürlichen Logarithmus einer Zahl zurück.
Argumente
Zahl (erforderlich) ist die positive reelle Zahl, deren natürlichen Logarithmus Sie berechnen möchten.
Hintergrund
Bei einer Gleichung b = ax, wobei a und b bekannt sind, lässt sich der Wert x durch das sog. Logarithmieren ermitteln:
X = logab
Beispiel:
2 = log39
Der Wert x wird als Logarithmus der Basis a mit dem Numerus b bezeichnet.
Alle Logarithmen mit gleicher Basis bilden ein Logarithmensystem. Als Basis können alle positiven Zahlen außer 0 und 1 verwendet werden.
Die Logarithmen mit der Basis 2 (binär) kürzt man mit lb ab.
In der Naturwissenschaft ...
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