Hi there,

I am trying to solve the following problem. I have gotten a fair way into it, but the last steps elude me. Here is the problem:

Show that

So, we already know that , because

Letting and :

Getting back to the matter at hand, we can take out the :

We can also write it as:

This gives the same series, because

is the same as

I don't know what to do to get the though.

Any help would be appreciated.

Regards,

Evanator