Question

1/[(2n-1)(2n+1)]...find the sum if this series converges?? help please

Answer 1

You were asking about telescopic yesterday. This is an example. You need to do a partial fraction decomposition. Then write out the first couple terms finding a pattern, then seeing if it converges by finding the nth partial sum and taking the limit as n->infty.

Answer 2

http://www.wolframalpha.com/input/?i=sum+of+1%2F((2n-1)(2n%2B1))

Unless its from 1 to infinity, then its:
http://www.wolframalpha.com/input/?i=sum+of+1%2F%28%282n-1%29%282n%2B1%29%29%2Cn%2C1%2Cinfinity

Answer 3

hm ok, thanks

Answer 4

did u get it?