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If y=8x^(3)-60x^(2)+144x+57 is a decreas...

If `y=8x^(3)-60x^(2)+144x+57` is a decreasing function in the interval (a,b) , then (a,b) is

A

`(-3,2)`

B

`(2,3)`

C

`(5,6)`

D

`(3,2)`

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The correct Answer is:
B
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AAKASH SERIES-MAXIMA AND MINIMA -PRACTICE SHEET (EXERCISE -I) (LEVEL -I) (STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  2. f(x)=(1)/(x-1) is decreasing in

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  3. If y=8x^(3)-60x^(2)+144x+57 is a decreasing function in the interval (...

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  4. The set of values 'x' for which f(x)=x^(3)+6x^(2)+27x+10 is increasisn...

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  6. A stationary point of f(x)=sqrt(16-x^(2)) is

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  7. I : The function f(x)=9x^(2)-15x-x^(3)+10 is increasing in (1,5) II...

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  8. If ma and M respectively denote the minimum and maximum of f(x) =(x-1)...

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  14. If x gt 0 , the maximum value of (log x) /x is

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  16. f(x)=log(a)x(xgt0) is decreasing function if

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  17. The function x+log((x)/(1+x)) is increasing when x belong to the inte...

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