sn= (((-1)^n)*n)/(2n- 1)

How would I determine the convergence or divergence of the sequence (sn) and find the limit if it exists?

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- Mar 19th 2009, 07:38 AMbearej50Simple Question
*s**n*= (((-1)^*n)***n*)/(2*n*- 1)

How would I determine the convergence or divergence of the sequence (*s**n*) and find the limit if it exists? - Mar 19th 2009, 08:39 AMCaptainBlack
- Mar 19th 2009, 08:53 AMShowcase_22Quote:

but for the ratio test (I should have probably put this in before =S) we need to take the modulus.

Unfortunately, if the ratio test produces 1 the test doesn't hold. =S