- #1
- 86
- 0
I am working with problems which are taking a toll on me.
1st and 3rd partial sums of the sequence An=(-2)^n+5
----I don't even know what formula to use to start this problem
and sum of hte geometric series:
2/3 - 4/9 + 8/27 - ...
I think I use this formula for this one: S=A1/1-r
Please help
1st and 3rd partial sums of the sequence An=(-2)^n+5
----I don't even know what formula to use to start this problem
and sum of hte geometric series:
2/3 - 4/9 + 8/27 - ...
I think I use this formula for this one: S=A1/1-r
Please help