1 . 已知函数
.
(1)求曲线
在点
处的切线方程;
(2)当
时,求证: 函数
存在极小值;
(3)请直接写出函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89dea1da7b5efc62402ef532b60964b2.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)请直接写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2022-05-01更新
|
891次组卷
|
6卷引用:北京市密云区2022届高三4月期中数学试题
北京市密云区2022届高三4月期中数学试题(已下线)临考押题卷04-2022年高考数学临考押题卷(北京卷)(已下线)重难点01七种零点问题-3北京师范大学第三附属中学2022届高三下学期5月模拟练习数学试题北京师范大学第三附属中学2022届高三下学期5月高考数学模拟试题北京市通州区2023届高三下学期2月月考数学试题
2 . 已知函数
,
.
(1)求曲线
在点
处的切线方程;
(2)求函数
的单调区间;
(3)若函数
有两个不同的零点,记较大的零点为
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef642bb911039a36ff9dff4641f37c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aff8d9b6533ff319420cdc5e8740b04.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18a8b71a8ab3e115a2813eb72364c4f.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef642bb911039a36ff9dff4641f37c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155c7f573e898da225390202da1767e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2676e18163369e3616a8d75a14ecb36c.png)
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3 . 已知函数
,
,
.
(1)证明:函数
在
处的切线恒过定点;
(2)求函数
的单调区间;
(3)证明:对任意实数b,当
时,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627172fc49f8dc1f77f8211590e1c249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3d06b54f895fe703277db2b7ea99ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)证明:对任意实数b,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b47952ada2ed5a108ae6204ad2c950e.png)
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4 . 设等差数列
的首项为0,公差为a,
;等差数列
的首项为0,公差为b,
.由数列
和
构造数表M,与数表
;
记数表M中位于第i行第j列的元素为
,其中
,(i,j=1,2,3,…).
记数表
中位于第i行第j列的元素为
,其中
(
,
,
).如:
,
.
(1)设
,
,请计算
,
,
;
(2)设
,
,试求
,
的表达式(用i,j表示),并证明:对于整数t,若t不属于数表M,则t属于数表
;
(3)设
,
,对于整数t,t不属于数表M,求t的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f0d538cab3daae7d590482989f2a35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254fa569dc952c0b78fed34c8a1daf97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bac0147b641a350b592ae6a8b565a8d.png)
记数表M中位于第i行第j列的元素为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e69701dd0e5844cd75752cd391deef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49128aead2182911b2d154bf8bcd1cf2.png)
记数表
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bac0147b641a350b592ae6a8b565a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbc4957c304de68d181441625394edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0227d02cc5bfa2845d30512262a47ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2d219599bb6453e9b8b431a948ecf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7965f5d265d8b1a5bea91a427dd3a21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aabd97c086e3e1a7fcf4a419d0adf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef914cefc04d21daa7a7ec165f1d269b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c251824d22684ccb464a910c27f2e204.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab839d8569171afab5ed55c22013aa72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86718fa3bd81961f00798692fbf86db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e05b891c5f036025713d20bf44c20704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c75905e8c61af58a59edd945b054da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ecbb868da9359eec873a17e530b634f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab1c19b66cda3fb899f06d9a25e973c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e69701dd0e5844cd75752cd391deef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cbc4957c304de68d181441625394edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bac0147b641a350b592ae6a8b565a8d.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab1c19b66cda3fb899f06d9a25e973c.png)
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