- #1
jamjar
- 10
- 0
Hi,
I've come across this series and I'm not sure in which direction I should be looking to get an equation for the sum. I've tried some simple methods but have come up blank.
[tex]\sum\limits_{n = 0}^{n - 1} {nr^n }[/tex]
Can anyone give me a nudge in the right direction?
I've come across this series and I'm not sure in which direction I should be looking to get an equation for the sum. I've tried some simple methods but have come up blank.
[tex]\sum\limits_{n = 0}^{n - 1} {nr^n }[/tex]
Can anyone give me a nudge in the right direction?