解下列不等式:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9213bc5e1c3ba3852fbb7ef9a6ca539a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a848cbdf505969224c35af75485fe92.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101d4c36e7033629fa938de918a463a7.png)
18-19高一·全国·课后作业 查看更多[2]
更新时间:2019-11-24 13:25:15
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解答题-问答题
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解题方法
【推荐1】设不等式
的解集是
,且
.
(1)试比较
与
的大小;
(2)设
表示数集
中的最大数,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9942656b065269633af3859d6106b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b85186925658e66d8541a5645269e.png)
(1)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdaba8b1591046933f2f725b6b1bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dec63e6d30a41fcc8972397875bf46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdbdfc3d5348e2b732ebe56fa4cc5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3bc4c23928d71d5184fe52047786ac.png)
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【推荐2】命题
;命题
.
(1)当
时,求不等式
的解集;
(2)若
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4514ba34eb84a3883f8f4169a44f2ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7068a349aaa09456a77dcd826000e4eb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e7c8cc9b109512507fe7059817ea98.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】已知函数
.
(1)当
时,求不等式
的解集;
(2)若不等式
的解集非空,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c088176d31fe702e54d3cabbc8d6dacb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8dd7446f874d24f71c14c752b413214.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d003e618811e7b0d8e68e54a5a47541a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知不等式
的解集为
,不等式
的解集为
.
(1)求
;
(2)若不等式
的解集为
,求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f90af9ba1a3d2362ecba6775e1d0030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa0d236b0027c26b3c5ae660fd684b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8023e1902803a7939d2aa32ba9e2d44f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fa375f216ad680c636bb77101215e5.png)
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