Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality a <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a <1         (1)

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    From inequality(1)：
         a < 1

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

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    From inequality(1)：
         a < 0

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    The final solution set is :
         a < 0

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