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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality ln（2x+6） ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ln ( 2 * x + 6 ) ≥0         (1)
        From the definition field of ln
         2 * x + 6 > 0        (2 )

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    From inequality(1)：
         x ≥ -5/2
    From inequality(2)：
         x ＞ -3

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    From inequalities (1) and (2)
         x ≥ -5/2    (3)

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    The final solution set is :
         x ≥ -5/2

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