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Let f (x) = {{:( x^(3) - x^(2) + 10 x- 5...

Let f (x) = `{{:( x^(3) - x^(2) + 10 x- 5 , "," , x le 1), ( -2x + log _(2) (b^(2) - 2) , "," , x gt 1):}` the set of values of b for which f(x) has greatest value at x = 1 is given by

A

` 1 le b le 2`

B

` b = {1,2}`

C

` b in (-oo,-1)`

D

none of these

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The correct Answer is:
D
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