名校
1 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ebfef550eec07598671c5929259780.png)
(1)若
,求不等式
的解集;
(2)若函数
为偶函数,此时
的最小值为t,若实数a,b,c满足
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624461bef21a0afc8417de01779053d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ebfef550eec07598671c5929259780.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeae3d0886ea80770248bf577737c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5143836462d67c7764fec4b0a6b4f820.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc52bfa6560b97109548a6a7d29deb33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125070d1efe0732ca39e5dcedf49d22c.png)
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2020-01-02更新
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2卷引用:辽宁省丹东市凤城市第一中学2019-2020学年高三上学期第一次月考数学(理)试题
名校
2 . 已知函数
.
(1)求函数
的最小值
;
(2)若正实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d53bb5e14f7f001900d142e13e6b2d7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d740b6da22bede219b13f233ad6e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db61a4287c7c0c47f89adaefaa5f6f6.png)
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2019-12-30更新
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3卷引用:湖北省武汉市2019-2020学年高三上学期11月综合测试(二)理科数学试题
3 . 已知定义在R上的函数f(x)=|x﹣m|+|x|,m∈N*,存在实数x使f(x)<2成立.
(1)求实数m的值;
(2)若α≥1,β≥1,f(α)+f(β)=4,求证:
≥3.
(1)求实数m的值;
(2)若α≥1,β≥1,f(α)+f(β)=4,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4810b30abe0eeed5833c4ffbc161c7b.png)
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2019-09-13更新
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3卷引用:福建省南平市2018-2019学年高二下学期期末考试数学文试题
4 . 已知函数
.
(1)求不等式
的解集;
(2)已知
是函数
的最小值,若正数
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450799da74a73a577ec4ae7b18134d53.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e23a38b3f33e10d52249b42b945eb48.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360a669b99179408c274d35698b8bd7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764274d68d2c72b983d7803ebe994aca.png)
您最近一年使用:0次
5 . 已知
,函数
.
(1)若
,求函数
的最小值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebac130045160b7cc1d76aadcb1d372a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb94e5053decf14ab60f307499aaa79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c582e765550902ce40e5ea3df432d3.png)
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2020-02-27更新
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2卷引用:2020届广东省清远市高三上学期期末教学质量检测数学(理)试题
6 . 已知
,函数
.
(1)若
,
,求函数
的最小值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc7a12881357035d59f2c1039daadd3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ea2fe6d047bc6d2c13ff4d397e8508.png)
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2卷引用:2020届广东省深圳市罗湖区高三上学期期末质量检测数学理科试题
7 . 已知正数a,b,c满足
.求证:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463f2fd2e30b12e61b1c11a201830606.png)
(2)若存在非零实数t.使得不等式
成立,求实数x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463f2fd2e30b12e61b1c11a201830606.png)
(2)若存在非零实数t.使得不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ec303786f1404273c754a78e26b3f2.png)
您最近一年使用:0次
名校
8 . 已知函数
.
(1)当
时,证明:
;
(2)若
的值域为
,且
,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bfdff4d543b742e29465ef177315e0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca27cc54ca0332245f5167488daa3408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e0400d730672ae2110ff48786dd1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0585b5ae4678e0f500044f1d931c465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665dc334a37e61c356b636604eb0f8c3.png)
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2020-02-09更新
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4卷引用:2020届重庆市第一中学高三上学期期末考试数学(文)试题
9 . 已知函数
.
(1)证明:
;
(2)当
时,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9268a13a72eacb0d59358249667be1cc.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608a57caffde627dbf140ca22a2ff8a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e96cc112a53421f3e85f4b59f29d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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8卷引用:福建省泉州市2019-2020学年高三上学期期末质检文数学试题
10 . 已知函数
,且关于x的不等式
的解集为
.
(1)求实数a,b的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ace0c072dc6426e620c02a26c892b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b5c984ad18afc2dd99dd09cf0db20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7e88b74f492f89e21e4cf65353bdb6.png)
(1)求实数a,b的值;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf3bb2f54ebaac1268ecdc5d22bebb2.png)
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2019-12-05更新
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2卷引用:辽宁省大连市普兰店区海湾高级中学2019-2020学年高三上学期期中数学(理)试题