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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (18k)^2-4(k+1)(81k-9) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 18 * k ) ^ 2 - 4 * ( k + 1 ) * ( 81 * k - 9 ) >0         (1)

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    From inequality(1)：
         k < 1/8

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    The final solution set is :
         k < 1/8

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