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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0.2 ≤0.8∧t ≤0.6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        0.2 ≤0.8 ^ t         (1)
        0.8 ^ t ≤0.6         (2)

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    From inequality(1)：
         t ≤ 7.212567
    From inequality(2)：
         t ≥ 2.289224

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    From inequalities (1) and (2)
         2.289224 ≤ t ≤ 7.212567    (3)

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    The final solution set is :
         2.289224 ≤ t ≤ 7.212567

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