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If ∫ − dx x x 1 4 2 = A(x) m 2 x 1 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ − + c, for a suitable chosen integer m and a function A(x), where C is a constant of integration, then (A(x)) m equals :

1. 6 x 27 1
2. 9 x 27 1 −
3. 4 x 9 1
4. 3 x 3 1

Correct answer: 9 x 27 1 −

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