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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality ab <4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         a <4         (1)

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    From inequality(1)：
         a < 4

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    The final solution set is :
         a < 4

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以下题目输入有误或有空行，请仔细检查，改正后再计算：
1==>错误类型：方程含有多元未知数(3): a＋b>4
解多元方程，请点击多元方程
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