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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 24k >= -18k^2-8 >= 51k .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        24 * k >= -18 * k ^ 2 - 8         (1)
         -18 * k ^ 2 - 8 >= 51 * k         (2)

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    From inequality(1)：
         k ≤ -2/3 或  -2/3 ≤ k ≤ -2/3 或  k ≥ -2/3
    From inequality(2)：
         -8/3 ≤ k ≤ -1/6

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    From inequalities (1) and (2)
         -8/3 ≤ k ≤ -2/3 或  -2/3 ≤ k ≤ -2/3 或  -2/3 ≤ k ≤ -1/6    (3)

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    The final solution set is :
         -8/3 ≤ k ≤ -2/3 或  -2/3 ≤ k ≤ -2/3 或  -2/3 ≤ k ≤ -1/6

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