名校
1 . 设实数x,y满足
,则z=
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac29bc4a46899847892f3a6f5d1a8336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01796619452a3a5ea5992194fa9b268.png)
您最近一年使用:0次
2019·江苏南通·一模
名校
2 . 已知函数
.
(1)若函数
在
处的切线方程为
,求实数
,
的值;
(2)若函数
在
和
两处取得极值,求实数
的取值范围;
(3)在(2)的条件下,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df34fbffa89aba5aaf21e633bb3c2e43.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971905ea129aec0ca7c325f60260c7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd86badb20015aa65328fda1e43a117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552cd99ee7b07d61814e9b2f8a40c36f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-12-29更新
|
1561次组卷
|
4卷引用:湖北省武汉二中2019-2020学年高二下学期4月第三次线上测试数学试题
湖北省武汉二中2019-2020学年高二下学期4月第三次线上测试数学试题(已下线)【市级联考】江苏省如皋市2019届高三教学质量调研(三)数学试题山东省青岛市崂山区第二中学2018-2019学年高三上学期期末数学(理)试题2020届江苏省高三高考全真模拟(九)数学试题
名校
3 . 已知函数
.
(1)当
时,求证:
恒成立;
(2)若关于
的方程
至少有两个不相等的实数根,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5768ce230120f50c9a3f629673dfa4cb.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eebe7397ead9e7ecaf5507ac7097221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-12-17更新
|
816次组卷
|
5卷引用:湖北省荆州市2022-2023学年高二下学期期中数学试题
名校
4 . 已知函数
为常数
.
(Ⅰ)若
是函数
的一个极值点,求此时函数
的单调区间;
(Ⅱ)若对任意的
,
,不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf5b2cf9e4621224291e3a8ca7ad808.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679353e656a54993c041ebd39ec7b31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
(Ⅱ)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/222c64ffe6ab94ed7c55d1b20f05700b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfbe898a3c8d7e392c35db1647e536a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004ead928ec51d415d4c6f77a0b9ccdc.png)
您最近一年使用:0次
2018-12-17更新
|
663次组卷
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2卷引用:【校级联考】湖北省部分重点中学2019届高三上学期期中考试数学(理科)试题
名校
5 . 已知函数
.
求
的单调区间;
Ⅱ
证明:
其中e是自然对数的底数,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4112bc7b35101c74442bdecdec580c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e86c3d9a86ec4798af6a52af6057ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0311e8fea14a1cbe2c89b30a9cfbc62.png)
您最近一年使用:0次
2018-12-10更新
|
505次组卷
|
2卷引用:【市级联考】湖北省鄂州市2019届高三上学期期中考试数学(文)试题
名校
6 . 已知函数
.
(1)求
的单调区间;
(2)若
,证明:
(其中
是自然对数的底数,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6da1cf990b217e4673bb294989b1aec7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb788e9c92435bf2484a947180d5815d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
您最近一年使用:0次
2018-11-30更新
|
530次组卷
|
3卷引用:湖北省鄂州市2019届高三上学期期中考试数学(理)试卷
名校
7 . 已知函数
.
(1)讨论
的单调性;
(2)若函数
有两个零点分别记为
.
①求
的取值范围;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c530742e781ee1ca5beb83a8f0ea02b2.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c158a550aaa60c8a2282649dae147e1d.png)
您最近一年使用:0次
2018-10-17更新
|
1221次组卷
|
3卷引用:湖北省黄冈联考协作体2018-2019学年高三上学期期中理科数学试题
湖北省黄冈联考协作体2018-2019学年高三上学期期中理科数学试题安徽省皖中名校联盟2019届高三10月联考数学(理)试题(已下线)专题05 导数与函数的零点问题 第一篇 热点、难点突破篇(讲)- 2021年高考二轮复习讲练测(浙江专用)
名校
8 . 已知
,函数
在点
处与
轴相切
(1)求
的值,并求
的单调区间;
(2)当
时,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7b93f38a85bc1c6dc9b2e3cfd5903e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795d7ca8be1d50c23c3e73874702679e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ce6a940d36f3298282b86057c64fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2018-08-10更新
|
1291次组卷
|
4卷引用:湖北省仙桃中学2018-2019学年高三上学期期中数学(理)试题
9 . 已知函数
(
),
(其中
为自然对数的底数).
(1)当
时,求曲线
在
处的切线方程;
(2)若对
,
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224d8242e7d2d01fe99ccb03c5a16c6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035ec3e088999dbfcd9f7f8eb095abf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee81751526ee44e61759586aed7b1a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcd143a57a268a5a8ef486e2a4d5c0a.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e14c581de3c299ce427d1d1729a8aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac130a7fece4d084af3917e867bd80de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c814fad1521bafd618108e468c1a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
10 . 设
是函数
的导函数,且
,
(
为自然对数的底数),则不等式
的解集为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994bbcf39f4dda34e877b21af71f103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4773890b18af8c2407dd487472ed06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9343b411afb4f3eb715a0654369e79d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaca22b9c060fa071f0e3346c8e1949e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-04-24更新
|
485次组卷
|
3卷引用:湖北省鄂东南省级示范高中教育教学改革联盟校2017-2018学年高二下学期期中考试数学(理)试题