Results 1 to 15 of 18

- Jan 20th 2007, 03:11 PM #1

- Joined
- Jan 2007
- Posts
- 17

## seriess

hello everyonee!

i need help on these questions please.

1) determine wether each of the followin series is convergent:

a) 2/2^2 + 2^2/2^2 + 2^3/3^2 + ... 2^n/n^2

b) Un = 1+2n^2/1+n^2

2)

does this series in picture converge (sorry did not know how to write in text)

- Jan 20th 2007, 03:15 PM #2

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 20th 2007, 03:18 PM #3

- Joined
- Jan 2007
- Posts
- 17

- Jan 20th 2007, 03:20 PM #4

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 20th 2007, 03:23 PM #5

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 20th 2007, 03:33 PM #6

- Joined
- Jan 2007
- Posts
- 17

- Jan 20th 2007, 05:35 PM #7

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 21st 2007, 03:23 AM #8

- Joined
- Jan 2007
- Posts
- 17

hey thanks alot!

I been working on these today and came across a example on the internet. But there is a process that i don't understand. I have attached a pic from the site and labelled what i don't understand with a red arrow. Hopefully if someone could help i would be very greatful.

how does it cancel?

(site: Calculus II (Math 2414) - Series & Sequences - Ratio Test)

thanxs

- Jan 21st 2007, 05:56 AM #9

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 21st 2007, 06:27 AM #10

- Joined
- May 2006
- From
- Lexington, MA (USA)
- Posts
- 12,028
- Thanks
- 846

- Jan 21st 2007, 06:50 AM #11

- Joined
- Jan 2007
- Posts
- 17

- Jan 21st 2007, 07:37 AM #12

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 24th 2007, 04:17 PM #13

- Joined
- Jan 2007
- Posts
- 17

- Jan 24th 2007, 04:58 PM #14

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jan 27th 2007, 04:42 AM #15

- Joined
- Jan 2007
- Posts
- 17