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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2cos（x-6/π）-1 <0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2 * cos ( x - 6 / π ) - 1 <0         (1)

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    From inequality(1)：
         -15.892499 < x < -11.703709 或  -9.609314 < x < -5.420524 或  -3.326128 < x < 0.862662 或  2.957057 < x < 7.145847 或  9.240242 < x < 13.429032

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    The final solution set is :
         -15.892499 < x < -11.703709 或  -9.609314 < x < -5.420524 或  -3.326128 < x < 0.862662 或  2.957057 < x < 7.145847 或  9.240242 < x < 13.429032
    *Note: Radian.

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