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The value of a for which the function (a...

The value of a for which the function `(a+2)x^(3) - 3ax^(2) + 9ax -1` decreases monotonically throughout for all real values of x , are-

A

`a lt -2`

B

`a gt -2`

C

` -3 lt a lt 0 `

D

` a le -3 `

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The correct Answer is:
D
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CHHAYA PUBLICATION-MCQ ZONE 3 -Question Paper 6
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  12. A minimum value of the function f(x) = int(0)^(x) te^(-t^(2))dt is-

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  14. The area ( in square unit ) in the first quadrant bounded by the parab...

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