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( ) ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ − → + 1 e x 3 tan ) x 3 1 ( log ) x ( 5 tan lim 3 4 x 5 2 1 2 e 3 1 0 x is equal to

1. 15 1
2. 3 5
3. 3 1
4. 1

Correct answer: 3 1

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