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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2^（x-1) ≤26 ≤2^x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        2 ^ ( x - 1 ) ≤26         (1)
        26 ≤2 ^ x         (2)

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    From inequality(1)：
         x ≤ 5.70044
    From inequality(2)：
         x ≥ 4.70044

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    From inequalities (1) and (2)
         4.70044 ≤ x ≤ 5.70044    (3)

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    The final solution set is :
         4.70044 ≤ x ≤ 5.70044

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