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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1 <= t <= 1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1 <= t         (1)
         t <= 1         (2)

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    From inequality(1)：
         t ≥ 1
    From inequality(2)：
         t ≤ 1

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    From inequalities (1) and (2)
         1 ≤ t ≤ 1    (3)

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    The final solution set is :
         1 ≤ t ≤ 1

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