Overview: 3 questions will be solved this time.Among them
           ☆3 inequalities

[ 1/3Inequality]
    Assignment:Find the solution set of inequality x^3-3x-2 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 3 - 3 * x - 2 >0         (1)

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    From inequality(1)：
         x ＞ 2

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    The final solution set is :
         x ＞ 2
[ 2/3Inequality]
    Assignment:Find the solution set of inequality x >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x >0         (1)

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    From inequality(1)：
         x ＞ 0

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    The final solution set is :
         x ＞ 0
[ 3/3Inequality]
    Assignment:Find the solution set of inequality x^2-1 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x ^ 2 - 1 >0         (1)

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    From inequality(1)：
         x < -1 或  x ＞ 1

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    The final solution set is :
         x < -1 或  x ＞ 1

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