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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4x2-4(1-x2)(-x2-1) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4 * x * 2 - 4 * ( 1 - x * 2 ) * ( -x * 2 - 1 ) >0         (1)

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    From inequality(1)：
         -0.309017 < x < 0.809017

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    The final solution set is :
         -0.309017 < x < 0.809017

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