2023高三·全国·专题练习
名校
解题方法
1 . 设不同直线
,
,则“
”是“
”的________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a619c4ad3aa4027c2c23a8ebe03fcb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b248d18d6dd6dc94136d64dff5faa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1095c036b49c3327baaa2c3c7f746134.png)
您最近一年使用:0次
名校
2 . 若
都是实数,试从①
,②
,③
中选出所有适合的条件,用序号填空:
(1)“
”的充要条件是 _________ ;
(2)“
”的充分不必要条件是 _________ ;
(3)“
且
”的必要不充分条件是 _________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b4937e23136a512ac1241ea7ba1c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa4f30f2d20877e74d9ae8c24366c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb20e291772c2614ad19f4cc919dfec.png)
(1)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cbcc6911602f0b0a26da59fb01ad402.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af00dcf5e126e1e0d684ad03d601d98.png)
(3)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
您最近一年使用:0次
11-12高二上·广东揭阳·阶段练习
名校
3 . ①一个命题的逆命题为真,它的否命题一定也为真:
②在
中,“
”是“
三个角成等差数列”的充要条件;
③
是
的充要条件;
④“
”是“
”的充分必要条件;
以上说法中,判断错误的有_______________ .
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32436704a722d5e568ff5c175bf3c662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c1e84aaa7e1b5c1283075b36c72fb5.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403b18b04a7de9e79384b602834d3faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59402e777165471831d1b6d458584a1.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
以上说法中,判断错误的有
您最近一年使用:0次
2018-01-07更新
|
592次组卷
|
4卷引用:福建省福州福清市2017-2018学年学年高二上学期期末考试数学(理)试题
福建省福州福清市2017-2018学年学年高二上学期期末考试数学(理)试题(已下线)2011-2012年广东省揭阳一中高二上学期第二阶段理科数学天津市蓟州区第一中学2017-2018学年度高二第一学期第二次月考数学(理)试题新疆伊西哈拉镇中学2018-2019学年高二上学期期末数学试卷
4 . 下列命题中,真命题为_____________.
(1)命题“
”的否定是“
”
(2)在
中,若
,则
.
(3)已知数列
,则“
成等比数列”是“
”的充要条件
(4)已知函数
,则函数
的最小值为2.
(1)命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640c769c838539797401f8e9a315bd09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8ee8f32727fe1aa8af8a2556f47a36.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7436246d4d71d4dc4bf5e5cd2111fb4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6cbbec0f900da8864d00e396893c98.png)
(4)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747541183dc10e3c5acf3d15dae2d0cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2016-12-04更新
|
1050次组卷
|
5卷引用:福建省福州教育学院附属第二中学2015-2016学年高二上学期期末考试数学(理)试题
13-14高二下·福建三明·期中
5 . 在整数集
中,被4除所得余数为
的所有整数组成一个“类”,记为
,则下列结论正确的为__________ .
①2014
;
②-1
;
③
;
④命题“整数
满足
,则
”的原命题与逆命题都正确;
⑤“整数
属于同一类”的充要条件是“
”
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/b29eb1bfa62e48069ec1beba52dc3cef.png?resizew=14)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/8068a16386c24b61ae9fb7caabe5517e.png?resizew=12)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/c0a9c2af6b6f4f8faa9f74252aad5474.png?resizew=193)
①2014
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/c03ada1e4f5640fd86c0f6f9f4f99587.png?resizew=32)
②-1
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/c54be434d0cb41ed8510c32ba0ea8e39.png?resizew=32)
③
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/8a70662d135b4d008dd8bfc53c3afad9.png?resizew=141)
④命题“整数
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/17ad6cec6e7a4c40b40de6650d667f99.png?resizew=26)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/70b15a528813457da93dea386d535ea3.png?resizew=89)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/616f372246424021ab1fe5f0383cad32.png?resizew=66)
⑤“整数
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/17ad6cec6e7a4c40b40de6650d667f99.png?resizew=26)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1573186126700544/1573186132852736/STEM/e208fb20a01a4589b0d4be93addecd36.png?resizew=66)
您最近一年使用:0次
2016-12-03更新
|
2206次组卷
|
3卷引用:2013-2014学年福建省三明一中高二下学期期中考试文科数学试卷