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1 . 函数
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d5e99c04d285c057e44af0b739d0b7.png)
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2 . 已知
,
,且
,证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ba449a8e384c9696b21ec11f19e256.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef22557e767d36c91571675e964825e4.png)
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3 . 已知函数
,若
,且
,则下面结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee6881a170f6ef9ed5c133b95c2f448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ba6d93a671ca21730facc7fbf052c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 已知
,
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f306d2b261f4c39a9fc0858d96e647.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.![]() ![]() |
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解题方法
5 . 已知函数
,实数
满足
.
(1)解不等式
;
(2)证明:对任意实数
,使
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41704e782a18e4fc47cda11f4df5c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6fae71c162e7be027a9b30a9187813.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a075dce77c9a6b964a8a3fc1ee6e8c.png)
(2)证明:对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a246b114e01128ed13a7d0798775d205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd2fa1502128fd34965a4a370f1eaed4.png)
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2024-06-14更新
|
150次组卷
|
2卷引用:陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题
6 . 已知数列
和
满足:
.
(1)设
求
的值;
(2)设
求数列
的通项公式;
(3)设
证明:______.
请从下面①,②两个选项中,任选一个补充到上面问题中,并给出证明.
①
;②
其中
.
注:若两个问题均作答,则按第一个计分.
![](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/08416257a7c5427d9266e9ee46ee492b.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb3a4652ccd6c113de9645852973d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08360bbdf8e90d7d35445ea6e9923658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a27e634b912cd518c69ff3ffb74db8.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc35823313a638d6dcf399efaeff9e0.png)
请从下面①,②两个选项中,任选一个补充到上面问题中,并给出证明.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51206c051804c48be676c6510c63ce3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b09b55a8bc170344adf78ee08ea8892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce671943072553870e3c059e835e980c.png)
注:若两个问题均作答,则按第一个计分.
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7 . 以下命题正确的是( )
A.已知a,b,c,d均为实数,若![]() ![]() ![]() |
B.已知a为正数,则![]() |
C.若a,b,c是正数,则![]() |
D.已知![]() ![]() |
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8 . (1)已知
,求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6a93645a9c1f5a2961519d74bf51567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22bbb6c88cb559f76a89daa17f7084c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3e2dc4e933c2bb7a1cb19cee8d0ad7.png)
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解题方法
9 . 已知
,
,
均为正数
(1)求证:
;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8920a005c0b2e5b9cf0f916d1ce20329.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf43bd907a0590831d324d5eff38ea54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd71a22dc65b28a0e6f8e4b9ee9e3b0.png)
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10 . 几个重要不等式
(1)
(a,
)(当且仅当
时取等号).
变形式:______ (a,
)(当且仅当
时取等号).
(2)基本不等式:______ (
,
)(当且仅当
时取等号).
变形式:
(
,
),
(a,
)(当且仅当
时等号成立).
(3)
(a,b,
)(当且仅当
时取等号).
(4)若
,则
,
(当且仅当
时取等号).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fe5d9cbe4f83926f5c21912df67a2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3849dacb9cd91d905551d858ffdd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
变形式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3849dacb9cd91d905551d858ffdd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
(2)基本不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
变形式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759c09917e5728d75bf5cfdb5b4a807f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b5c6b3c5470bfc6af6eb17e8ee2c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3849dacb9cd91d905551d858ffdd5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a59101326c029393a18f8285893fcbb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa21fa613a161efcd163fc2cb55fbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44acc0ee22dc4b7750e8be825e7c1355.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa23408bcc9f6200f22a310e5f2569a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95dd00785c80a941afa84bf2437182b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
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