用“
”、“
”定义新运算:对于任意实数a,b,都有a
b=a和a
b=b,例如3
2=3,3
2=2.则(2013
2014)
(2011
2012)的值是 ( )
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/567f3bad509d49069ad588ead96e19d6.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/8a394f7ad7a64404ad8cecfd9a5b85f4.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/567f3bad509d49069ad588ead96e19d6.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/8a394f7ad7a64404ad8cecfd9a5b85f4.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/567f3bad509d49069ad588ead96e19d6.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/8a394f7ad7a64404ad8cecfd9a5b85f4.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/567f3bad509d49069ad588ead96e19d6.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/567f3bad509d49069ad588ead96e19d6.png?resizew=19)
![](https://img.xkw.com/dksih/QBM/2022/10/20/3091870988845056/3093269536145408/STEM/8a394f7ad7a64404ad8cecfd9a5b85f4.png?resizew=19)
A.2011 | B.2012 | C.2013 | D.2014 |
更新时间:2022-10-22 17:35:53
|
【知识点】 新定义下的实数运算
相似题推荐
单选题
|
较易
(0.85)
【推荐1】对于正实数a与b,定义新运算“*”如下:
,则4*(4*4)等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f738d4161ad403cbb0ec851504aefd.png)
A.1 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】定义:对于一个有理数,我们把
称为x的相伴数,若
.则
,若
,则
.则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f344fd588492f8bcbb5f55b2946ea735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed8ab233c12f40d9ff12d374f00d389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cefd70003c8b094dcf269b263fbcf816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26a4e020fa098947d629f07c877614e.png)
A.3.5 | B.2.5 | C.1.5 | D.0.5 |
您最近一年使用:0次