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⎟ ⎟ ⎟ ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎜ ⎜ ⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π − ∫ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π π → 3 3 2 x 3 / 1 2 2 x dt ) t cos( 2 x 1 lim is equal to-

1. 4 3 π
2. 8 3 π
3. 4 3 2 π
4. 8 3 2 π

Correct answer: 8 3 2 π

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