Overview: 4 questions will be solved this time.Among them
           ☆4 inequalities

[ 1/4Inequality]
    Assignment:Find the solution set of inequality X1+X2-2 ≤0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         X * 1 + X * 2 - 2 ≤0         (1)

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    From inequality(1)：
         X ≤ 2/3

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    The final solution set is :
         X ≤ 2/3
[ 2/4Inequality]
    Assignment:Find the solution set of inequality X1+5X2-5 ≤0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         X * 1 + 5 * X * 2 - 5 ≤0         (1)

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    From inequality(1)：
         X ≤ 5/11

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    The final solution set is :
         X ≤ 5/11
[ 3/4Inequality]
    Assignment:Find the solution set of inequality X1 ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         X * 1 ≥0         (1)

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    From inequality(1)：
         X ≥ 0

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    The final solution set is :
         X ≥ 0
[ 4/4Inequality]
    Assignment:Find the solution set of inequality X2 ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         X * 2 ≥0         (1)

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    From inequality(1)：
         X ≥ 0

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    The final solution set is :
         X ≥ 0

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