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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 6 ≤a+sqrt(a^2-16) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        6 ≤ a + sqrt ( a ^ 2 - 16 )         (1)
        From the definition field of √
         x ^ 2 - 16 ≥ 0        (2 )

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    From inequality(1)：
         a ≥ 13/3
    From inequality(2)：
         a ≤ -4 或  a ≥ 4

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    From inequalities (1) and (2)
         a ≥ 13/3    (3)

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    The final solution set is :
         a ≥ 13/3

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