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Let f(x)=x^3+3x^2-9x+2 . Then, f(x) has ...

Let `f(x)=x^3+3x^2-9x+2` . Then, `f(x)` has a maximum at `x=1` (b) a minimum at `x=1` (c) neither a maximum nor a minimum at `x=-3` (d) none of these

A

60

B

48

C

42

D

18

Text Solution

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The correct Answer is:
A
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