1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f743bd3474bea3e10c9205970d7f934.png)
(1)若
恒成立,求a的值;
(2)若
有两个不同的零点
,且
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f743bd3474bea3e10c9205970d7f934.png)
(1)若
![](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/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c66ed9ac7c9b79a030abf86895ccdb.png)
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2 . 已知函数
.
(1)求证:
;
(2)若
是
的两个相异零点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba20f73926fa882b592848c085f060f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93296bd064e2c6ae84bc4fe7b22f1e4b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bd625540579bf15a6465a2224c9d61.png)
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3卷引用:河南省漯河市高级中学2024届高三下学期三模数学试题
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3 . 已知函数
,其中e为自然对数的底数.
(1)若函数
在
上有2个极值点,求a的取值范围;
(2)设函数
,
),证明:
的所有零点之和大于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffabb66b55e415c2c864685fa5223d2.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef53a8a0375569abd516895e30fa350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddea382d8bece5514a9cbd6a225667e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
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4 . 已知函数
.
(1)求
的极大值;
(2)若
,求
在区间
上的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073a7bdf1d247d71151a32d5e1f6d824.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa92733c5fc38c5496eb3bbc3409fcf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746afb7885b9137a2df5b169acfa0fef.png)
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5 . 函数
的图象在
处的切线为
.
(1)求
的值;
(2)求
在
上零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ffb145f8ecfbf55b4a132d8e08baf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3387dc60a3712cea80c54b59ce8fa09a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
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2卷引用:河南师范大学附属中学2024届高三下学期最后一卷数学试题
6 . 已知函数
.
(1)讨论函数
的单调性;
(2)若函数
有且仅有两个零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15248fda64819646fb6fc552be647d6.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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7 . 已知
,若存在
,使得
,则称函数
与
互为“
度零点函数”. 若
与
互为“1度零点函数”,则符合条件实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6139874948845d6643add178d218113d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73473d8859a59049c16724051ef585f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95ddc4b4add7f825a74246bad338808.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3c3763d6399a518467a760e3e42622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b33722ed005cd32c488a2c1941b705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
8 . 已知函数
.
(1)当
时,证明:
;
(2)若
在区间
上有且只有一个极值点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d1560ceea21168a8f266dad592ec3b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be1d8c6384d7fabddb693b2b7fcdf4a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-06-03更新
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3卷引用:河南省信阳市新县高级中学2024届高三考前第二次适应性考试数学试题
9 . 已知函数
.
(1)若
,求
在
处的切线方程;
(2)讨论
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f7391742ac948de1b5109c366fadaf4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d06e33d079ac1649ee5eea8f61de7cf.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
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10 . 函数
.
(1)当
时,证明:
;
(2)讨论函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f66485edbb44393cf7638981e5616c7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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4卷引用:河南省南阳市社旗县第一高级中学2024届高三下学期三模理科数学试题
河南省南阳市社旗县第一高级中学2024届高三下学期三模理科数学试题湖北省新高考协作体2024届高三统一模拟考试数学试题(五)(已下线)重难点突破07 函数零点问题的综合应用(十大题型)-2江西省宜春市丰城中学2023-2024学年高一下学期第三次段考(5月月考)数学试题