若定义一种新运算:
,例如:
,
.下列说法:
①
;
②若
,则
或2;
③若
,则
或
;
④
与直线
(m为常数)有1个交点,则
.
其中正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41d826fa050252811bcaaf91eba0c409.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98479dbc6b33c43c13c6bc8b13da3b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff068a10bb7f0dd5b7dee13e4381e64.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf7b5823e0ef525104b7d3f30093ee3.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675075c86092c662b44a0b212518b24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1add108301ed4b37a7c8533f8630128a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1441c57f1cb48a7f74ba44146753d58e.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df42beeb9b0aceb1bcae24e2401aa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fdfcf4715e3a8e419b2b180d241a2ac.png)
其中正确的个数是( )
A.4 | B.3 | C.2 | D.1 |
22-23九年级上·重庆大渡口·期末 查看更多[5]
重庆市大渡口区九十五中佳兆业中学校2022-2023学年九年级上学期期末数学试题(已下线)专题21.16 二次函数与反比例函数章末十六大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(沪科版)(已下线)专题22.12 二次函数章末九大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(人教版)(已下线)专题1.12 二次函数章末九大题型总结(拔尖篇)-2023-2024学年九年级数学上册举一反三系列(浙教版)2023年重庆市九龙坡区九年级下学期5月中考模拟数学模拟预测题
更新时间:2023-01-26 14:56:00
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