Unformatted text preview: (ln n ) 4 n 2 b ) ∞ X n =1 2 n n ! n n c ) ∞ X n =1 (1) n1 n 2 n + 1 7. Let a n = ± n 2 n , n odd 1 2 n , n even .Does ∞ X n =1 a n converge? 8. Which of the following series converge absolutely, which converge conditionally, and which diverge? a ) ∞ X n =2 cos( nπ ) n ln n b ) ∞ X n =1 cos( nπ ) n √ n c ) ∞ X n =1 (1) n (2 n )! 2 n ( n !) n d ) ∞ X n =1 (1) n ( √ n + 1√ n ) 1...
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 Spring '10
 Tor
 Math, series converge, ln n n2

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