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If f(x) =kx^3-9x^2+9x+3 is increasing on...

If `f(x) =kx^3-9x^2+9x+3` is increasing on R,then

A

`k lt 3`

B

`k gt 3`

C

`k le 3`

D

none

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-APPLICATIONS OF DIFFERENTIATION-EXERCISE 1E (MAXIMA AND MINIMA)
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