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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 3*sinx^2+sinx^3+sinx^4 <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        3 * sin x ^ 2 + sin x ^ 3 + sin x ^ 4 <1         (1)

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    From inequality(1)：
         -6.929048 < x < -5.742865 或  -3.681913 < x < -2.49573 或  -0.645863 < x < 0.54032 或  2.601272 < x < 3.787455 或  5.637322 < x < 6.823505

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    The final solution set is :
         -6.929048 < x < -5.742865 或  -3.681913 < x < -2.49573 或  -0.645863 < x < 0.54032 或  2.601272 < x < 3.787455 或  5.637322 < x < 6.823505
    *Note: Radian.

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