1.

The real numbers x_1, x_2, x_3satisfying the equation x^3-x^2+b x+gamma=0ar ein A.P. Find the intervals in which betaa n dgammalie.

Answer»

`(-OO,1//3][-1//27,oo)`
`(-oo,3)`
`(-1//3,1//3)(-1//27,1//27)`
NONE of these

Answer :A


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