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A function y = f ( x) has a second order...

A function y = f ( x) has a second order derivative f''(x) = 6 (x-1). If the graph passes through the point (2, 1) and at this point tangent to the graph is y = 3x - 1, then function is :

A

`(x + 1)^(3)`

B

`(x - 1)^(3)`

C

`(x + 1)^(2)`

D

`(x - 1)^(2)`

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The correct Answer is:
B
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