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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1-4x+5x^2-2x^3 <= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 - 4 * x + 5 * x ^ 2 - 2 * x ^ 3 <= 0         (1)

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    From inequality(1)：
         1/2 ≤ x ≤ 1 或  1 ≤ x ≤ 1 或  x ≥ 1

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    The final solution set is :
         1/2 ≤ x ≤ 1 或  1 ≤ x ≤ 1 或  x ≥ 1

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