已知
的解集为
.
(1)求
的值;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42037fd49b928a683d214768ff157538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9d6c5d86da66443cbc79be980641a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f183e8d175fce7715fc176482a4d206c.png)
18-19高二·全国·假期作业 查看更多[5]
步步高高二数学暑假作业:【文】作业20 选修4-4:坐标系与参数方程 选修4-5:不等式选讲步步高高二数学暑假作业:【理】作业21 选修4-4:坐标系与参数方程 选修4-5:不等式选讲(已下线)专题12.3 绝对值不等式(练)【文】-《2020年高考一轮复习讲练测》(已下线)【新教材精创】2.2.2不等式的解集练习(2)-人教B版高中数学必修第—册(已下线)【新教材精创】2.2.2 不等式的解集 练习(2)-人教B版高中数学必修第一册
更新时间:2019-05-17 15:17:51
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解答题-问答题
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较易
(0.85)
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【推荐1】设函数
.
(1)当
时,求不等式
的解集;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211875dd656ec599e28d4befcffcdc31.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f028e597d34316db2c4c993fc72ff32d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d24227741bf427e6bd73490baf3c3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】已知集合
,
.
(1)若
,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/fa525bd162e4379318aad973ef5180d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff1cf1a99c82a0f2674211872e92bb9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](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
解答题-问答题
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较易
(0.85)
【推荐2】选修4-5:不等式选讲
设函数![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697157206016/1570697162833920/STEM/cd167af2b9ec44049a8c706086b60c03.png?resizew=143)
(I)当
时,求
的最小值;
(II)如果对
,求实数
的取值范围.
设函数
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697157206016/1570697162833920/STEM/cd167af2b9ec44049a8c706086b60c03.png?resizew=143)
(I)当
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697157206016/1570697162833920/STEM/d15c6d4b11914fec92d410c27d2922c0.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697157206016/1570697162833920/STEM/3f0469c6bde04e7e871fc65ec7b959ea.png?resizew=36)
(II)如果对
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697157206016/1570697162833920/STEM/be14f488c72c4686aaac002a05f42686.png?resizew=108)
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697157206016/1570697162833920/STEM/f450a8a493ae491695b17d7033a194b0.png?resizew=13)
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