Date: Nov 2, 2010 7:10 PM Author: imnotaspai Subject: how to derive a formula to find the sum of a sequence? So, let's say I have a question like

5

SUM (k+1)

k=1

5 being the upper limit

k being lower limit

k+1 being the sequence

How would I find a formula to get the answer, without actually adding every k+1 ect

The teacher told us to do something like this for the first step:

1 2 3 4 5

5 4 3 2 1

sum of the top and bottom = 6.. From there I'm lost

Can anyone help?

Thanks