名校
解题方法
1 . 已知在
中,
.证明:
(1)
;
(2)
在
上恒成立;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92a98e220a9a1f2a1caa37e4cf4e213.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5e4691210486a560c59df09937d9f8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991a6e773c41687e5b13d36da7612e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb222ce13688da6fc57089ebf5812b0e.png)
您最近一年使用:0次
名校
2 . 已知
,则下列说法正确的有______ .
①若
有且仅有一个零点,则
;
②若
有且仅有一个零点,则
;
③若
有且仅有两个零点,则
;
④若
有且仅有一个极值点
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f33dfa2e69a4d9cf93797b1f95c0a8e.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db0eb7b60e88da1d807797cb17f85d0.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a65f98fb31af1299a4d4b31d67a240b0.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe33a19334467abffbd1f79ab245ce4e.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
.
(1)令
,讨论
的单调性并求极值;
(2)令
,若
有两个零点;
(i)求a的取值范围:
(ii)若方程
有两个实根
,
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca646a9f0e0060891a82c39e33dd6af.png)
(1)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0bb9e98b6699fbfed3772d75c6bbe46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155064e0bec1198c32041d1daf82e678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(i)求a的取值范围:
(ii)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1b97fbb2cf9a6b3d290e921d8a9a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12a4eecd249473a831d0ee472470240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9565876bc50bceb63e5793c8c67a9032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6677f8f96f7982de5637c229a49e4b37.png)
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2022-10-26更新
|
2205次组卷
|
10卷引用:天津市滨海七校2020-2021学年高三上学期期末联考数学试题
天津市滨海七校2020-2021学年高三上学期期末联考数学试题天津市第二南开学校2021-2022学年高三上学期期中数学试题天津市北京师范大学天津附属中学2022-2023学年高三上学期期末数学试题天津市耀华中学2022届高三下学期统练9数学试题四川省绵阳南山中学2022-2023学年高三上学期绵阳一诊热身考试理科数学试题黑龙江省哈尔滨市第九中学校2022-2023学年高三上学期第三次月考数学试题(已下线)第二篇 函数与导数 专题6 函数周期性、对称性、拐点 微点2 函数的拐点与对称中心天津市实验中学滨海学校2022-2023学年高二下学期期中数学试题(已下线)模块八 专题11 以函数与导数为背景的压轴解答题(已下线)北京市丰台区2023届高三下学期3月一模数学试题变式题16-21
4 . 已知函数
,其中,
是自然对数的底数,
.
(1)当
,
时,求证:
;
(2)若函数
有两个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e07cb92d1939cb10ba83d9f00590651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee18d7a40f7a7e0dc85b1bd75bf750c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6000b174147cec2de26041837aec1b3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
5 . 已知函数
(
).
(1)当
时,证明:
;
(2)若
有且仅有两个零点
,
,求实数
的取值范围,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322c441a30306a1016d75577d1626f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1c7eb356ec74b5e456c16e10b510ca.png)
您最近一年使用:0次
名校
6 . 已知函数
,其中
.
(1)求证:
;
(2)若函数
为定义域上的增函数,求
的取值范围;
(3)若函数
在
上有两个零点
,
,求参数
的取值范围,并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c15568646e493f940a0cd16ce5cfbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc1c98c9dcab33fe2908ebff7bbec97.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df8be4561f2c16984e3094f655af8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ddf9bdacc41c1f335a882d346d8fd4.png)
您最近一年使用:0次
解题方法
7 . 已知函数
.
(1)若
恒成立,求a的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328f37801b0529af7453de40313e25cb.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f55e264d57e71f54ba1a5873185ac8.png)
您最近一年使用:0次
8 . 已知函数
(
为自然对数的底数).
(1)求曲线
在点
处的切线方程:
(2)若方程
有两个不等的实数根
,
而,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bebcb7d744d59686bed773859da1c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09bb6f646a12faa245718332f27b711.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b647bef81d6e219c508eca1517d9342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed46edcfa6b4eecd1270d19e18aff518.png)
您最近一年使用:0次
9 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedd7be672b179eaf072f53635fe130b.png)
_____ ;若直线
(
)与函数
的图象有交点,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd0690b529099376398a467c9c0612d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aedd7be672b179eaf072f53635fe130b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd0690b529099376398a467c9c0612d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
10 . 已知函数
.
(1)当
时,比较
与1的大小;
(2)当
时,若关于
的方程
有唯一实数根
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f88f469ea1c3f5af9ee49300402769b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35dd621776dee688a0175a1abe39c258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8397d73cb59bc75bd15a4c4ed2ed5f59.png)
您最近一年使用:0次