名校
1 . 已知向量
,设函数
.
(1)求
的表达式并完成下面的表格和画出
在
范围内的大致图象;
![](https://img.xkw.com/dksih/QBM/2016/10/28/1573099218722816/1573099225194496/STEM/a019359f47b1493889d2b8e83e661383.png)
(2)若方程
在
上有两个根
、
,求
的取值范围及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e946314bbe82b72f800d380af5f05a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b11eeda104db8bca949d535f0674d98.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fae755f5f05442ddbe797d1ae565c29.png)
0 | ![]() | ![]() | ![]() | |||
![]() | 0 | ![]() | ||||
![]() |
![](https://img.xkw.com/dksih/QBM/2016/10/28/1573099218722816/1573099225194496/STEM/a019359f47b1493889d2b8e83e661383.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee2125e761b2ef9da51dc0f9a02dee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fae755f5f05442ddbe797d1ae565c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74c62c14a017007a6bdfe25eada9c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e197143a3210c70f87d5147128e80de.png)
您最近一年使用:0次
2016-12-04更新
|
288次组卷
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2卷引用:2017届安徽六安一中高三上学期月考二数学(文)试卷
2 . 已知函数
.
(1)若
在区间[1,2]上不是单调函数,求实数
的范围;
(2)若对任意
,都有
恒成立,求实数
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5b193254eb319aa2a256fe3a52b832.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfe44972e8bf50ec9d250f298bbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d5b955735c38b43680462e1edf32fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-04更新
|
528次组卷
|
3卷引用:2020届全国100所名校高三模拟金典卷理科数学(三)试题
2020届全国100所名校高三模拟金典卷理科数学(三)试题2015-2016学年广西柳州铁路一中高二上期末理科数学卷(已下线)第六章 导数与不等式恒成立问题 专题五 单变量恒成立之必要性探路法(4) 微点1 必要性探路法(4)——外点效应、拐点效应、孤点效应
3 . 已知函数
(a是实数),
+1.
(1)当
时,求函数
在定义遇上的最值.
(2)若函数f(x)在[1,+
)上是单调函数,求a的取值范围;
(3)是否存在正实数a满足:对于任意
,总存在
,使得f(x1)=g(x2)成立,若存在求出a的范围,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea3649c21398edb7ab98b7959e4b973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29200014924889383ccd1f2dfdd8b888.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数f(x)在[1,+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac14bba5a4105a67c2f6a94e2cf29cc.png)
(3)是否存在正实数a满足:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5f10c7e310a388d23671ddd5f663ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da585b605a2bb14d2b1b250afeb7838e.png)
您最近一年使用:0次
2011·浙江·一模
4 . 已知函数
图象的对称中心为
,且
的极小值为f(2)=
.
(1)求
的解析式;
(2)设
,若
有三个零点,求实数
的取值范围;
(3)是否存在实数
,当
时,使函数
在定义域[a,b]上的值域恰为[a,b],若存在,求出k的范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64b2133e75b541bb6f4c7911b3a5e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff202e6ef7c424a37a1706cbbfd4b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c787b3ae93138bac7485c406d29f94b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485a2d99320384a0857b00ce9ab9e990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69767470956b5d3c001def570781dc3.png)
您最近一年使用:0次
11-12高二下·江苏·期中
真题
5 . 已知函数
,
,其中
是
的导函数.
(1)对满足
的一切
的值,都有
,求实数
的取值范围;
(2)设
,当实数
在什么范围内变化时,函数
的图象与直线
只有一个公共点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949555e22878021b9329581092e9ceb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a586b1d801713383df5a94816bb8df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)对满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89c33bf8803c80b65d4ebd7746645e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f36f7ab55b63c08280a41fb64366b819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc3780d60762c06b514e1b0264c4282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9355031ea0b2dc9cef3777621bc6d38.png)
您最近一年使用:0次
6 . 设
,函数
,函数
,
.
(Ⅰ)判断函数
在区间
上是否为单调函数,并说明理由;
(Ⅱ)若当
时,对任意的
, 都有
成立,求实数
的取值范围;
(Ⅲ)当
时,若存在直线
(
),使得曲线
与曲线
分别位于直线
的两侧,写出
的所有可能取值. (只需写出结论)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e4b994dbe43b3dc59409507791ae05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b44ce1f38097acac14cd28b5dc07fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096f1be1cd0f6fb6856e9d147f076c28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db2eb29042782efa4f96d82e6aa35d6.png)
(Ⅰ)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a141e697b1a31a9a4e759984e899a5.png)
(Ⅱ)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9234e2ee3ebf72645582a8319a0168b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bd3b259fabe06824f1abeca77a3dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(Ⅲ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c61ed9bb08a0a1bfff16f95ea95098.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307da948a9e2f6f48cf86295bff9a61a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f869c504d225b642b67137595a8be7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
7 . 设三角形
的内角
所对的边长分别是
,且
.若
不是钝角三角形,求:
(1)角
的范围;
(2)
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deb20369fd1af5a2cbf495a2271820f0.png)
您最近一年使用:0次
2016-12-03更新
|
743次组卷
|
2卷引用:2015届上海市闵行区高三下学期质量调研考试(二模)理科数学试卷
8 . 已知函数
(a是实数),
+1.
(1)若函数f(x)在[1,+
)上是单调函数,求a的取值范围;
(2)是否存在正实数a满足:对于任意
,总存在
,使得f(x1)=g(x2)成立,若存在求出a的范围,若不存在,说明理由.
(3)若数列
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea3649c21398edb7ab98b7959e4b973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29200014924889383ccd1f2dfdd8b888.png)
(1)若函数f(x)在[1,+
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac14bba5a4105a67c2f6a94e2cf29cc.png)
(2)是否存在正实数a满足:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5f10c7e310a388d23671ddd5f663ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da585b605a2bb14d2b1b250afeb7838e.png)
(3)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db87ffceab6741bf496f69449cc728d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fca9a0efeb0c5f998448e3fea9a24af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0821f223bdd4f1f6cb0fb6d31cb27f9a.png)
您最近一年使用:0次
解题方法
9 . 已知关于
的方程
在
上有解.
(1)求正实数
取值所组成的集合
;
(2)若
对任意
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19706bcbde1e2b7b0dd18155a92cf653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3606fd3966dc72e0f8a32047945a86e2.png)
(1)求正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82d6e146bacd3c2f9761ec7b299aae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc020b0997a2f37b214718112b79d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2017-03-19更新
|
729次组卷
|
2卷引用:2017届安徽省江南十校高三3月联考数学(理)试卷
10 . 已知函数
.
(1)若
,求函数
在
上的最小值;
(2)若函数
在
上存在单调递增区间,求实数
的取值范围;
(3)根据
的不同取值,讨论函数
的极值点情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950c4608f052411f9afcf0d7f16b1581.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7754cc9374c8193dadb6875fb8a3fefb.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b448fe164c2c2931805e3b3847dcdd75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)根据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2016-12-04更新
|
1409次组卷
|
2卷引用:2016届天津市和平区高三第四次模拟理科数学试卷