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

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

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    From inequality(1)：
         R < 0 或  0 < R < 1/2

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    The final solution set is :
         R < 0 或  0 < R < 1/2

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