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The tangent to the curve y=x^(3)+1 at(1,...

The tangent to the curve `y=x^(3)+1` at(1, 2) makes an angle `theta` with y-axis, then the value of tan `theta` is

A

`- 1/3`

B

3

C

-3

D

`1/3`

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The correct Answer is:
D
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