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Suma cu factoriale
http://www.mateforum.ro/viewtopic.php?t=3834
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Suma cu factoriale
Posted:
Thu Apr 02, 2009 5:45 pm
by
BogdanCNFB
Calculati
\( \sum_{k=1}^n k\cdot k! \)
.
Posted:
Thu Apr 02, 2009 6:46 pm
by
Bogdan Cebere
Vezi
aici
al 5-lea post.