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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 0 <1/9+1/(9*x^(2/3)) <1/2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        0 <1 / 9 + 1 / ( 9 * x ^ ( 2 / 3 ) )         (1)
        1 / 9 + 1 / ( 9 * x ^ ( 2 / 3 ) ) <1 / 2         (2)
        From the definition field of divisor
         9 * x ^ ( 2 / 3 ) ≠ 0        (3 )

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    From inequality(1)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(2)：
         x ＞ 0.152721
    From inequality(3)：
         x ∈ R （R为全体实数），即在实数范围内，不等式恒成立！

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    From inequalities (1) and (2)
         x ＞ 0.152721    (4)
    From inequalities (3) and (4)
         x ＞ 0.152721    (5)

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    The final solution set is :
         x ＞ 0.152721

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