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⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ + + + + + + + + + + + ∞ → ) n n )( n n ( n ....... ) 3 n )( 9 n ( n ) 2 n )( 4 n ( n ) 1 n )( 1 n ( n lim 2 2 2 2 2 2 2 2 2 n is equal to

1. 2 log 4 1 8 e + π
2. 2 log 8 1 4 e + π
3. 2 log 8 1 4 e − π
4. 2 log 8 1 8 e + π

Correct answer: 2 log 4 1 8 e + π

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