已知集合
,
.
(1)若
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9131a9826c6695044d70affbe4d8d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee11645f5fe7c807b10bf8d446aa88b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-07-18 15:50:08
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解答题-问答题
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解题方法
【推荐1】已知集合
,
.
(1)若A为非空集合,求实数
的取值范围;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab61a1d7dc6336ac10a747a86a646725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248f7dec5ba0802dd72ce088fc55286e.png)
(1)若A为非空集合,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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适中
(0.65)
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【推荐2】已知集合
.
(1)若
,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ede051e4f6d69a0ad92ec4ccfb8150.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36197dbba11bce817f010740ad8fd1ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】已知集合
,
.
(1)当
时,求
;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5cafa9eaa804691443d55f04ab5969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b9d6cbfa96105420e95e7f585d6909.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448519b92579dfba9cfd1115339eb1fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】设全集
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,
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(1)若
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0dc8098ad6f31bdd87771ca9cfa33a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f831c69d09a14b16d13075bed9bad9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad0e7fd2ee897cf8188beb4ec946627.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acff98078cdd32804d8f1c4efbe2ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ae3bb39a224d9d8149f7a259ab4765.png)
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【推荐2】设命题
对
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(1)若
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(2)若
为真,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c662fa6fddd3a80ab4bdb898bd7dd476.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
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【推荐1】已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1759eaf002b4955d062bcfaee2c7162.png)
(1)若
的解集为
,求
的值;
(2)求函数
在
上的最小值
;
(3)对于
,使
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15692e40f3f8dd2aa38d5b84a9f295fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1759eaf002b4955d062bcfaee2c7162.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0430106c727c8b0f5550acc73c7f7d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184ef196e5750f471d039879bb1ad8be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd330acca8e17f5ff9aca1f0f312df50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8466eb9886525938873fbbef8c51c47.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb35171fccc35cb104ed735b91ca57d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a7730d920ecebeb21c06c7ee8761e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知三个不等式:(1)
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