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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality sqrt(4a^2*(1+2/a))/a ≥1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         sqrt ( 4 * a ^ 2 * ( 1 + 2 / a ) ) / a ≥1         (1)
        From the definition field of divisor
        x ≠ 0        (2 )
        From the definition field of √
         4 * x ^ 2 * ( 1 + 2 / x ) ≥ 0        (3 )
        From the definition field of divisor
        x ≠ 0        (4 )

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    From inequality(1)：
         a ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(2)：
         a < 0 或  a ＞ 0
    From inequality(3)：
         a ≤ -2 或  a ≥ 0
    From inequality(4)：
         a < 0 或  a ＞ 0

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    From inequalities (1) and (2)
         a < 0 或  a ＞ 0    (5)
    From inequalities (3) and (5)
         a ≤ -2 或  a ＞ 0    (6)
    From inequalities (4) and (6)
         a ≤ -2 或  a ＞ 0    (7)

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    The final solution set is :
         a ≤ -2 或  a ＞ 0

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