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

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

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    From inequality(1)：
         -14.660766 < x < -10.471976 或  -8.37758 < x < -4.18879 或  -2.094395 < x < 2.094395 或  4.18879 < x < 8.37758 或  10.471976 < x < 14.660766

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    The final solution set is :
         -14.660766 < x < -10.471976 或  -8.37758 < x < -4.18879 或  -2.094395 < x < 2.094395 或  4.18879 < x < 8.37758 或  10.471976 < x < 14.660766
    *Note: Radian.

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