已知函数
,
.
(1)当
时,求不等式
的解集;
(2)若对任意
,
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8a84f06d59fd9b77bceb4eeb7a1db3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66c0ea6f3840d62644bc54a5100fbab.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c2447f4c1345dee5b46ca19d68f6af.png)
更新时间:2022-05-02 12:19:02
|
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适中
(0.65)
【推荐1】(2018年4月2018届高三第二次全国大联考(新课标Ⅰ卷))设函数
.
(1)若
,求不等式
的解集;
(2)若不等式
存在实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aaa0b7312fba7558ea192fe86db388d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2180e18416d40abb243bd23984e7aba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知函数
(
,
).
(1)当
,
时,解不等式
;
(2)若
的最小值为1,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526acc0ac6a5dc48d26d49988ef6681c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86304c3e26200299a0480641525a283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e314d99c7a237fd383f155c33e35f73c.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知
,
,其中
,
.
(1)当
时,求
;
(2)若
是
的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9d64dff4043933eaa0511f3a959389d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a970e65c772af893631faac9339ab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f32025b8f56643b79c7becb3251908d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5370359c0a51bf74a56323bf414a3b8.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c97d54952104950bfd7afc0176bbd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f107d87b09135ba6960ee7bb57a4df8.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
|
适中
(0.65)
【推荐2】已知函数
.
(1)解不等式:
;
(2)若对任意的
,都有
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463626f264208db4f9c718fee30bddf5.png)
(1)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6308e46e9042083aba1c3ae4fcacfb8.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12965bbc260bdbb0df0a110e59fb8d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf60c5e8996d138198fe74f30ce520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29f5020d133f458912dc3da22b8127d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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