名校
1 . 下列各结论中,正确的是______ .
①“
为真”是“
为真”的充分不必要条件;
②“
为假”是“
为假”的充分不必要条件;
③“
为真”是“
为假”的必要不充分条件;
④“
为真”是“
为假”的必要不充分条件.
①“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
您最近一年使用:0次
2022-01-26更新
|
206次组卷
|
2卷引用:宁夏回族自治区银川一中2021-2022学年高二下学期期中考试数学(文)试题
名校
2 . 给出下列四个命题:①“
”是“
”的充分不必要条件;②设
,命题“若
,则
”的否命题是真命题;③若
则
或
是假命题;④已知点
的坐标分别为
直线
相交于点
,且它们的斜率之积是
,则点
的轨迹方程为
.其中所有正确命题的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c988d709ba8cd8aed6cb83d76c0ba89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e17daf187973e378497f6e77f7bad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a878fd5a7104a7f42770a19097d56457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bdfc6e53ec0af4942365bb570c6741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e79c769c50c74160bcdfba30759b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fb7ec4aa413693f4ecae59fe0e2084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf41a917940c6d8a30da627c7b3e79f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
您最近一年使用:0次
2020-10-13更新
|
168次组卷
|
2卷引用:宁夏银川市第二中学2020-2021学年高二上学期月考(一)数学(理)试题
名校
3 . “
”是“对任意的正数x,均有
”的________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51e2b8f615b2cc7eca7fda25efb507d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5533d122aeca0cea3a5ac219169ef28.png)
您最近一年使用:0次
4 . 已知复数
,
,则“
”是“z为纯虚数”的______ 条件.(填写“充要”、“充分不必要”、“必要不充分”、“既不充分也不必要”中的一个)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ea57c4dbd42bc66fc949e68dfe1efd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
您最近一年使用:0次
2020-03-26更新
|
103次组卷
|
2卷引用:宁夏贺兰县景博中学2020-2021学年高二上学期第二次月考数学(理)试题