设
,则“
且
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f439047c3281068ffa16d849576e930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878bd395bb794b38269c4162a1d24657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2c3934e126bec2f126f8b7ebdcc86d.png)
A.充分不必要条件 | B.必要不充分条件 | C.充要条件 | D.既不充分也不必要条件 |
2023·海南海口·二模 查看更多[3]
更新时间:2023-05-28 07:33:39
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相似题推荐
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适中
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【推荐1】在
中,“
”是“
为直角三角形”( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0635cdbf0f0b4ebc98e9bd75d6dcfd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
A.充分条件 | B.必要条件 |
C.充要条件 | D.非充分非必要条件 |
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【推荐2】下列命题中:
①线性回归方程
必过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7dff023c114177c4414ff48369f588.png)
②“
”是“
”的充分必要条件
③在
中,“
”的充要条件是“
”
④若
,
,则
的最小值为
.
其中正确的个数是
①线性回归方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae048beafc460d7a3175258ff59edc5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a7dff023c114177c4414ff48369f588.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099baa4be0d87781c053cf59fe301ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad99f286d557b3c400af3f220c7cfdbc.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c270c7508ec18bfae26af47763aab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086defd602b3cc9012ace0e077be0ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7266b2ef457b8ddeee3fa2cc24022e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c9298da3cd8b9db58692e0173f3fd3.png)
其中正确的个数是
A.1 | B.2 | C.3 | D.4 |
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【推荐1】①若
,则
.②若
,则
.
③若
则
.④若
则
.
其中正确命题的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4dd37454a4d8a8ab9321f3ce1e85bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443dd938cf51421ff3a000d50b56eded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5a784d15393607164f20a71f656eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fef331f94cef74af7a625084adbbafdd.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa75e187eb6a889f65d1b7dea1a81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cf14982900b008c48eebcc77a1d5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35ecdcfd26b89c12fcff8918fce6a6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92eab4a813eeaf0a5c04111c81148cc.png)
其中正确命题的个数为
A.1个 | B.2个 | C.3个 | D.4个 |
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解题方法
【推荐2】下列命题中正确的是( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
您最近一年使用:0次