What is the sum of the series -LSB- math -RSB- 1 \ cdot 1 ! +2 \ cdot 2 ! +3 \ cdot 3 ! + \ ldots + n \ cdot n ! \ ; ? -LSB- / math -RSB-
How can i find a partial sum formula for : -LSB- math -RSB- 1 \ cdot 1 ! +2 \ cdot 2 ! +3 \ cdot 3 ! \ ldots n \ cdot n ! -LSB- / math -RSB- ?