解题方法
1 . (1)比较
与
的大小;
(2)简要小结你解答第(1)问所用的方法.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a804c5e6c91b456b34811da5cc2db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803b7f140f9f1658166aeed6b37138eb.png)
(2)简要小结你解答第(1)问所用的方法.
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2 . 已知
,由此式可得不等式
,当且仅当
时等号成立.利用此不等式求解以下问题:设
,
,则
的值不可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecddd569467f667fe30af08fd45b078f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c76da5edd4633d1fb68e3a4ede06473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd68c14adb3cf12d8f77aec55a053284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6caeef44c0f0fec0cc9afbf20aa208.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ffc033707a1679c1f0832f31f39a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc216bdd8dad41aa7d581a6b883b4fac.png)
A.1 | B.2 | C.3 | D.4 |
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解题方法
3 . 下列条件中能使
成立的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a6f362a7f8f972d6b329a882e940d1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-12-20更新
|
120次组卷
|
2卷引用:重庆市云阳县南溪中学校2022-2023学年高一上学期第三阶段性检测数学试题
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5 . 如果
,且
,那么以下不等式正确的个数是( )
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fac3162e61b6491fb232fa0820c567d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ecda7bfb0a2043306bf7707a136ad0.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87561d57ef103caed9c1d2781776a902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2595ba1beeafc31235a49510898b203d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-12-19更新
|
567次组卷
|
5卷引用:安徽省合肥世界外国语学校2022-2023学年高一上学期期中数学试题
6 . 下列命题为真命题的是( )
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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7 . 下列说法正确的是( )
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
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2022-12-16更新
|
385次组卷
|
3卷引用:河南省周口市郸城县第一高级中学2022-2023学年高一上学期第一次月考数学试题
8 . 已知
,且
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 若实数
,则以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cafac0a2406fbf661207dac75a3438.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 对于任意实数
、
、
、
,下列命题:
若
,
,则
;
若
,则
;
若
,则
;
若
,则
中.
真命题个数为( )
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef20073a12bab727faa217718b63414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b34c5832f3fe28f48a924854cb8814ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b9d08cf536bbb76bce1b0f135772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c22b9d08cf536bbb76bce1b0f135772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
真命题个数为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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