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Q.

The function x(x-1) (x-2) attains its maximum value when x=

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a

1-13

b

1+13

c

13

d

1

answer is A.

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Detailed Solution

fIx=0 3x2-6x+2=0 x=6±36-24/6 =6±12/6 =1±1/3

fx is min or max

fx=xx-1x-2 =xx2-3x+2 =x3--3x2+2x f1x=3x2-6x+2

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fx is max at x=1-1/3

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