名校
解题方法
1 . 对于函数
和
,设
,若存在
使得
,则称
和
互为“零点相邻函数”.设
,
,且
和
互为“零点相邻函数”.
(1)求
的取值范围;
(2)令
(
为
的导函数),分析
与
是否互为“零点相邻函数”;
(3)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1f6dc102cde1ad73261dd011fe2d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7c5d913c7b5aaf5a3ed0054e6b4647c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22ec92162aa1b78e8768e5fa0294f41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6caa47b05ebbf9816c4e6f159c740f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4b7fddfba71bb09e7e5ab7f1a2f213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34937ab7546361c8bb4873a164ced32b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28789ca506fc253b4019f92998e14094.png)
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名校
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5edbbc3f9dcc564f13325250a361235.png)
(1)求曲线
在点
处的切线方程;
(2)求证:函数
的图象位于直线
的下方;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5edbbc3f9dcc564f13325250a361235.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
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名校
3 . 已知函数
.
(1)讨论
的单调性;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a959bf5cfa2463fd68347ea79e8b65b1.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24c3f2ed4a82c3f7245aee6bfe1d4f5.png)
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4 . 已知函数
,下列说法中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144eb23c6ce0f77c71c18729d1cd3ddc.png)
A.函数![]() ![]() |
B.曲线![]() ![]() ![]() |
C.函数![]() |
D.方程![]() ![]() ![]() |
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解题方法
5 . 设命题p:
,
(其中m为常数),则“命题p为真命题”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc33b9979cfd0fbffe8c031b4b1f265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2f4630b66f80a5f2b7f186e49b321e.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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6 . 已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)讨论
的单调性;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dced786e226d2da22e732a503578d19.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a0312fad9d89d658ee8cd098adbaa5.png)
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解题方法
7 . 已知
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e2a07a844eb9fb1148f6ce6cc0915ab.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
8 . 已知函数
在区间
上单调递增,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c2e384d26a5ff148fa5119b5fe071a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知函数
的导函数
的图象如图所示,则
的图象可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024高三·全国·专题练习
10 . 已知函数
,
.若
,讨论
在
上的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce77ae7713fa73806f905e9f4c5ee7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360ff131c51a4ef6745538c18cec92c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7adf2b785b3fef20ebbaa48b11d5d5f.png)
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