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If f(x) is a cubic polynomil which has l...

If f(x) is a cubic polynomil which has local maximum at x=-1 . If f(2)=18,f(1)=-1 and f'(x) has minimum at x=0 then

A

the distance between (-1,2) and (a,f(a)), where x=a is the point of local minima, is `2sqrt(5)`

B

f(x) is increasing for `x in [1,2sqrt(5)]`

C

f(x) has local minima at x=1

D

the value of f(0)=5

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The correct Answer is:
B, C
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ARIHANT MATHS-MONOTONICITY MAXIMA AND MINIMA-Exercise (Questions Asked In Previous 13 Years Exam)
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  7. If f(x) is a cubic polynomil which has local maximum at x=-1 . If f(2)...

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