Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1 ≤3x^2-2x+1 <2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1 ≤3 * x ^ 2 - 2 * x + 1         (1)
        3 * x ^ 2 - 2 * x + 1 <2         (2)

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    From inequality(1)：
         x ≤ 0 或  x ≥ 2/3
    From inequality(2)：
         -1/3 < x < 1

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    From inequalities (1) and (2)
         -1/3 < x ≤ 0 或  2/3 ≤ x < 1    (3)

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    The final solution set is :
         -1/3 < x ≤ 0 或  2/3 ≤ x < 1

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