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不等式中求取值范围的题目怎么解

2025-04-07 07:42:59

推荐回答（2个）

回答1：

若是不等式组（两个或两个以上的不等式）就把它逐个解出来，然后在纸上画出它们在数轴上，他们所共有的地方就是他的取值
例如3X+2<5
5X+1>-9
解第一个得x<1,解二的X>-2
所以-2

回答2：

列出不等式条件，画出图中函数图，列出不等式锭亥赤酵俦寂稠檄椽漏或不等式组，同大取大，比大的大，比小的小无解。比小的大，比大的小，取中间

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