Question: ( 2 0 ) Determine whether the sequence converges o r diverges. I f i t converges, find the l i m i t .

(20) Determine whether the sequence converges or diverges. Ifit converges, find the limit.
(a)an=(-1)n+1nn+n2
(b)an=(2n-1)!(2n+1)!
(c)an=2-ncosn
(d)an=(1+2n)n
(e)an=n-n+12n+32
(f)an=n!2n
( 2 0 ) Determine whether the sequence converges

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