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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 【-（2k+1）】^2-4k^2大于等于0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( -( 2 * k + 1 ) ) ^ 2 - 4 * k ^ 2 ≥0         (1)

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    From inequality(1)：
         k ≥ -1/4

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    The final solution set is :
         k ≥ -1/4

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