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The function f(x) =3+12x-9x^2+2x^3 is in...

The function `f(x) =3+12x-9x^2+2x^3` is increasing in

A

`(2//3,oo)`

B

`(1,5)`

C

`(2//3,4)`

D

`(-oo,1)cup(2,oo)`

Text Solution

Verified by Experts

The correct Answer is:
D
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