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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ZWEIFAKULTÄT()
FACTDOUBLE()
Syntax
ZWEIFAKULTÄT(Zahl)
Definition
Die Funktion gibt die Fakultät zu Zahl mit Schrittlänge 2 zurück.
Argumente
Zahl (erforderlich) ist der Wert, für den die Fakultät mit Schrittlänge 2 berechnet werden soll. Ist Zahl keine ganze Zahl, werden die Nachkommastellen abgeschnitten.
Hintergrund
Die Fakultät n! einer Zahl n ist eine häufig benutzte Funktion, deren Definition lautet:
n! = n(n – 1)(n – 2)...(3)(2)(1)
Davon abgeleitet ist die Funktion ZWEIFAKULTÄT(), die in der Zahlentheorie eine große Rolle spielt. Sie ist für gerade Zahlen so definiert:
n!! = n(n – 2)(n – 4)...(4)(2)
und für ungerade Zahlen folgendermaßen:
n!! = n(n – ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.