现定义对于一个数a,我们把
称为a的“邻一数”;若
,则
;若
,则
.例如:
,
.下列说法,其中正确结论有( )个
①若
,则
;
②当
,
时,
,那么代数式
的值为4;
③方程
的解为
或
或
;
④若函数
,当
时,x的取值范围是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265ae7f9de1c743deccdf2d30359da21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd45132f592418a0a68eaa0d43462b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac9eb4f13a6ec140f7050e8d7dde52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7de6f56d9dd2c603681bf6191afd52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f71c3e4409aa3e6bcf897656bf9b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eada775bc7601caa2155446281a4353f.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e222148b38653c210f50e217b39faf5.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c5364549777d55d036d24ecfbb2ee20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc313b8038f4614bb4459c8827425c66.png)
③方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edba31022d6bf2bc97ba97673f56fd15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1cab75c61acd245f9bdecd6646383d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975ef29bfe20f84c041b8c6ff08bc9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54078c4af5b305e26b8e3faa6423e67e.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b7d6cf8ba17d1a714b3b989569c4b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf70c5edc6b345b6df97f4920648e1a1.png)
A.0 | B.1 | C.2 | D.3 |
更新时间:2024-03-14 17:03:08
|
相似题推荐
单选题
|
较难
(0.4)
【推荐1】对于不为零的两个实数a,b,如果规定a★b=
,那么函数y=x★3的图象大致是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2826cd9adc00bdb980ce7b87ca5b96a.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐2】对
定义一种新运算
,规定:
(其中
均为非零常数),这里等式右边是通常的四则运算.例如:
,若
,
,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
,
;
若
,则
;
若
,则
有且仅有
组整数解;
若无论
取何值时,
的值均不变,则
;
若
对任意有理数
都成立,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca5ef8dec02d4f0d3bf4faa78d4f1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b756879f6b9cac79102dd27ed3277a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251ede67fbc7d1f11db4e2458529d4f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e834a93a493a7f019ca014dacb720b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3bac4f76715e77de31d8fa7e506469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d2c7b4815433c81af4c01817b63ec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82e415812cca9545611c0faa0c01b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f1445a1144108871870c1c9262600e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0877194ab8760f54c35527177b03ff93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8b8edd94bc4d5d517ec77e56800e41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb25f6f5a981a6c0ef392d164ff89654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/652c2cea7e7421065b84c3673aef18e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de7958890f35a4e42c700044a9c4c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341a05df5804c3d58f1c0fd12ff99809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a882037b9ce104ecc496e0f31a139361.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐1】已知实数
满足
,那么
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aa50fa8c1f1e9f40759d2101da2aa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc9602760474bd2753ef8cedad1b686.png)
A.1999 | B.2000 | C.2001 | D.2002 |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐2】已知
,
是方程
的两根,则代数式
的值是( )
![](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/f4cdd6f27334444c1884876b9e4cfe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd7d01ef0c0aa662ac38d84f9943328f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】如果两个角的两边分别平行,而其中一个角比另一个角的3倍少20°,那么这两个角是( )
A.50°、130° | B.都是10° |
C.50°、130°或10°、10° | D.以上都不对 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐2】下列图形都是由面积为1的正方形按一定的规律组成的,其中,第1个图形中面积为1的正方形有9个,第2个图形中面积为1的正方形有14个,……,按此规律,则第几个图形中面积为1的正方形的个数为2019个( )
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646477725794304/2650981728174080/STEM/c0831793-fd8b-41d7-af2d-15b4edd53946.png?resizew=600)
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646477725794304/2650981728174080/STEM/c0831793-fd8b-41d7-af2d-15b4edd53946.png?resizew=600)
A.402 | B.403 | C.404 | D.405 |
您最近一年使用:0次
单选题
|
较难
(0.4)
【推荐1】已知方程
的其中一个实数根x满足
,则a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68e77dd03b17d19a5a23aa4e816d679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较难
(0.4)
名校
【推荐2】已知二次函数
,经过点
.当
时,x的取值范围为
.则如下四个值中有可能为n的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304ddbcf0f583755dcdd8394b3fbee0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c71aebc75a8e3935b3e8a5b497b052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb618615b66011a12c557df60076aadc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5325e9a6a2636fd9f39003cf95d45229.png)
A.-1 | B.-2 | C.1 | D.2 |
您最近一年使用:0次