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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality xsinx >= 3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x * sin x >= 3         (1)

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    From inequality(1)：
         x ≤ -19.008047 或  -15.513355 ≤ x ≤ -12.802892 或  -9.088377 ≤ x ≤ -6.744168 或  6.744168 ≤ x ≤ 9.088377 或  12.802892 ≤ x ≤ 15.513355 或  x ≥ 19.008047

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    The final solution set is :
         x ≤ -19.008047 或  -15.513355 ≤ x ≤ -12.802892 或  -9.088377 ≤ x ≤ -6.744168 或  6.744168 ≤ x ≤ 9.088377 或  12.802892 ≤ x ≤ 15.513355 或  x ≥ 19.008047
    *Note: Radian.

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