1 . 已知函数
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32dbf8717febdf6f4af43da55ea2d0b.png)
________ .若方程
的所有实根之和为4,则实数m的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2235bc9ec38b1d909529015ca856d4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b39d25d985ab69f2a08b61bf19ce84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32dbf8717febdf6f4af43da55ea2d0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4414a5a567af96e8aeb8fa2a3a397a6.png)
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名校
解题方法
2 . 已知函数
,其中
.
(1)若
,求曲线
在点
处的切线方程;
(2)若
,
(i)证明:
;
(ii)判断函数
在
上的单调性,并证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc292b41b68cb16d0c048f566d2965e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a4211f33625593f00e8bbea25362ef.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf46dc84732526c826d84a71c407ea89.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3176cd595cf999e7c8d4370cfffea8dd.png)
(ii)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34340ef0d177a645a631405eaa3592e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4396f093f90acdc9e5b2a2f7c48c7034.png)
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3 . 已知
是单调递增的等差数列,其前
项和为
.
是公比为
的等比数列.
.
(1)求
和
的通项公式;
(2)设
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cc6db65304d2424d93a1add0540da0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4aa026716a11f9f7c0a2339fba4ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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名校
4 . 设函数
,若方程
有三个不同的实数根
,则实数
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf089ed69fdb19ca8e7fb7ca58e7345b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a73db674d29eae8f8921eff5944983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-05-28更新
|
612次组卷
|
3卷引用:天津市咸水沽第一中学2023届高三押题卷(五)数学试题
5 . 已知
是公比为q的等比数列.对于给定的
,设
是首项为
,公差为
的等差数列
,记
的第i项为
.若
,且
.
(1)求
的通项公式;
(2)求
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecea6aa3b0b367dbd8d0e38c65829c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac24dd2ff15d115696e8a9f8dad264f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c66a0c50c32fba396a322f0ddbeda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac24dd2ff15d115696e8a9f8dad264f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f686d89f95d2dc846e53eab5ca99ddde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33c0acaa66514a4f1493b158ebd09e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608df648efc5364a2dc2c67cfe14cd9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27dd9877202542cc6975d5a4d78724a.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88b0922dc08ae6398dfc0296037c759.png)
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2023-05-20更新
|
1169次组卷
|
3卷引用:天津市咸水沽第一中学2023届高考押题卷(一)数学试题
名校
解题方法
6 . 已知
,且
,若函数
有三个不同的零点,则实数a的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdd1da7fc6c8a85b2ff9de637b91f019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3368388525e30cb7179909b03184eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
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7 . 已知函数
有且只有3个零点,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebd75d411d003fa9b5444860b89391f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-03-02更新
|
717次组卷
|
5卷引用:天津市咸水沽第一中学2023届高考押题卷(二)数学试题
天津市咸水沽第一中学2023届高考押题卷(二)数学试题天津市南开区南大奥宇学校2022-2023学年高三上学期第四次月考数学试题天津市耀华中学2024届高三上学期第一次月考数学试题天津市南开区南开中学2024届高三上学期统练6数学试题(已下线)天津市耀华中学2024届高三上学期第一次月考数学试题变式题6-10
名校
8 . 已知
,其中
.
(1)当
时,分别求
和
时
的单调性;
(2)求证:当
时,
有唯一实数解
;
(3)若对任意的
,
都有
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae1d5e1ae68c2c1f7b46f65263c3c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab958eede2dbad749ba70bb230c88fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-02-04更新
|
730次组卷
|
2卷引用:天津市咸水沽第一中学2023届高考押题卷(二)数学试题
名校
解题方法
9 . 已知数列
的前n项和为
,
,
,
(
且
)
(1)求数列
的通项公式;
(2)令
,求数列
的前n项和
.
(3)设
,
,其中
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd67791e11bf12e41449eed1781e2f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91f5915e62b151b18156b548e97ce34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3203575dca7e5d3233f8e3b5f0d22669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4f301232123cb7732d4dfacbd1fcab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7399fcd570d1de4057f2059759d18cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa104c781e026ca07a0378a37981a79.png)
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10 . 椭圆
的离心率
,过点
,左顶点为A,过点A作斜率为
的直线l交椭圆C于点D,交y轴于点E,
(1)求椭圆C的标准方程.
(2)求
面积取最大值时的k的值.
(3)若P是线段AD的中点,问是否存在x轴上一定点Q,对于任意的
都有
,若存在求出Q点坐标,若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24940fd5aa8073928d201b0c6fb11aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
(1)求椭圆C的标准方程.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7bd8bfbd43d0cf1604b8d7e0023f57.png)
(3)若P是线段AD的中点,问是否存在x轴上一定点Q,对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8697b87ab11b3879deea8732852192.png)
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