Ok so I tried that and it seems like it is somewhat on the right track but It doesn't divide by the (n-1):
.
Integration by parts is the way to go: .
Let
.
Let .
Then .
Note that .
Then .
Therefore .
Calculate and sub it in.
Now re-arrange the resulting equation to solve for ......
Last edited by mr fantastic; January 29th 2008 at 06:10 PM.
Reason: Fixed a typo that led to a cascadng error. And added the integration by parts formula.
Thanks a lot! I had actually tried tanh^2 thing but made a mistake. Here is the solution for anyone if they are interested (I just really like using this LaTeX stuff!):
Last edited by TrevorP; January 29th 2008 at 07:16 PM.