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- May 16th 2008, 07:15 AMszpengchaor they convergent or not?
- May 16th 2008, 08:12 AMflyingsquirrel
Hi

For the first one, you can try to show that for . For the second one, the ratio test may be helpful.

Not completely off-topic question : If do English speaking people say that is an approximation of ? Is there another way of saying this ? - May 16th 2008, 08:38 AMszpengchaosorry
sorry, i found

the first one is less or equal to (n^3+8*n^2+1)/(n^4-n^2),

i think the later one is convergent. so the first one is convergent? - May 16th 2008, 08:46 AMDr Zoidburg
- May 16th 2008, 08:51 AMflyingsquirrel
- May 16th 2008, 09:08 AMszpengchaook
so how can u show that sequence tends to 1/n ????

- May 16th 2008, 09:16 AMflyingsquirrel
- May 16th 2008, 01:00 PMMathstud28