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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 3*sin(π/6-3*x)+1 <2.5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 * sin ( π / 6 - 3 * x ) + 1 <2.5         (1)

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    From inequality(1)：
         x < -4.886922 或  -4.18879 < x < -2.792527 或  -2.094395 < x < -0.698132 或  0 < x < 1.396263 或  2.094395 < x < 3.490659 或  x ＞ 4.18879

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    The final solution set is :
         x < -4.886922 或  -4.18879 < x < -2.792527 或  -2.094395 < x < -0.698132 或  0 < x < 1.396263 或  2.094395 < x < 3.490659 或  x ＞ 4.18879
    *Note: Radian.

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