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If for the curve y=1+bx-x^(2) the tangen...

If for the curve `y=1+bx-x^(2)` the tangent at (1, -2) is parallel to x-axis, then b =

A

2

B

`-2`

C

1

D

`-1`

Text Solution

Verified by Experts

The correct Answer is:
D
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