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The integral ∫ + + + dx ) 1 x 3 x 2 ( x 2 x 3 4 2 4 11 13 is equal to : (where C is a constant of integration)

1. C ) 1 x 3 x 2 ( 6 x 3 2 4 12 + + +
2. C ) 1 x 3 x 2 ( 6 x 3 2 4 4 + + +
3. C ) 1 x 3 x 2 ( x 3 2 4 12 + + +
4. C ) 1 x 3 x 2 ( x 3 2 4 4 + + +

Correct answer: C ) 1 x 3 x 2 ( 6 x 3 2 4 12 + + +

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