I need to take the sum of (1/k) - (1/(k+4)) as k--> 1 to infinity

My answer is..

-4/(k(k+4))

Is that correct? Please help!!

Printable View

- April 18th 2009, 05:48 PMpinkprincess08Please check summation of infinite series?
I need to take the sum of (1/k) - (1/(k+4)) as k--> 1 to infinity

My answer is..

-4/(k(k+4))

Is that correct? Please help!! - April 18th 2009, 05:51 PMmatheagle
Nope.

The k is a dummy variable, the final answer is a number, possibly infinity, free of k. - April 18th 2009, 05:56 PMpinkprincess08
Okay, so I just did some algebraic manipulation before but, that doesn't get to me the answer...then how do it go about it?

- April 18th 2009, 06:11 PMmr fantastic
- April 18th 2009, 06:35 PMCalculus26
See attachment only if you haven't figured it out based on Mr fantastic's sage advice.

- April 18th 2009, 09:05 PMpinkprincess08
Sk = 1+(1/2)+(1/3)+(1/4) ?

- April 18th 2009, 09:59 PMmatheagle
- April 18th 2009, 10:29 PMmr fantastic
Hardy ha ha. You're a fine one to talk, dad. I

*have*googled you, you know. Only moo is allowed to make jokes about my age (because she's the only member [that I'm aware of] who knows what it is within a bull's roar - well, within a sd, anyway).

Anyhow, since things are getting off-topic and the OP has solved the problem, I'll try and make my old athritic fingers type out Thread Clos

(Headbang) - April 18th 2009, 10:30 PMmr fantastic