Well each term is going to have a .2, every term but the first will have a .02, every term but the 1st and 2nd will have a .002, etc.

So the basic idea in terms of in is like: Sum = .2*n+.02(n-1)+.002*(n-2)...

Make sense?

Results 1 to 2 of 2

- October 6th 2009, 12:46 AM #1

- Joined
- Oct 2009
- Posts
- 1

- October 6th 2009, 01:44 AM #2

- Joined
- Oct 2005
- From
- Earth
- Posts
- 1,599