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Let f(x) underset( 2X -3 " "1 lt...

Let f(x) `underset( 2X -3 " "1 lt X lt 3)(={ -X^(2) +((b^(3) -b^(2) +b-1))/((b^(2) +3b+2))}} 0le X lt1`
Find al possible values of b such that f(x) has the smallest values at x=1

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The correct Answer is:
`b in (-2, -1) cup [1, oo)`
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