下列命题中,真命题的个数有( )
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a68f8e2ec48f45612f906c3c26fcebe.png)
②
;
③函数
是单调递增函数.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a68f8e2ec48f45612f906c3c26fcebe.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba1dae40744dce47ba07a4b0eb7387d.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef9d69de06c1300c314c3c6623abb1e.png)
A.0个 | B.1个 | C.2个 | D.3个 |
2011·福建莆田·一模 查看更多[2]
更新时间:2016-11-30 20:50:27
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】下列命题正确的是( )
A.若![]() |
B.![]() ![]() |
C.命题“若![]() ![]() |
D.命题“![]() ![]() ![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】已知命题
;命题
直线
与圆
相切的一个充分不必要条件是
;则下列命题中是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2599544b549081e0dd66740bc6dfad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce20ef9c08e82df8c7f45bac6dd31d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8ba78658831f9fce13aafa1d93973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd037e93b977717878e9593f97da76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a1b197f5c9a0283567c83a4225a447.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐1】已知命题
,使得
;命题
,
,则下列命题为真命题的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbaf82fe2b22d44492a001a7a02466c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e056a75edeb7f458be8c18667538e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51423dc2f8e0c425c5b63b4bda7fbc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a24eaf12142d80b8472d7fa9b63ca01.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】下列命题中不正确命题的个数是( )
①已知
是实数,则“
”是“
”的充分而不必要条件;
②
,使
;
③
;
④
的取值集合为
.
①已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89a02453451985554031da21ac70f3f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375678a303fc4c01c67650cb5d715f31.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c873a19209a5391dc92d8d285bead35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a062b85e3b4aa9e7522c4e43b3d8f0c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb53d9649115bc77cc736efba7c2861a.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b4b3e07d39605805d3fcdd20f8f7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8860d357b01ef6293c5ebe0addaaed9e.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】下列四个命题中,其中为真命题的是
A.对任意![]() ![]() | B.对任意![]() ![]() |
C.存在![]() ![]() | D.存在![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】有四个关于三角函数的命题:
:
x
R,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db93f5ae179d970e478cb43b8030291c.png)
+![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baac50f844ebc073cbd706eac150c4e6.png)
=
:
x,y
R,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e40d565a6db5be4184292ec6597367.png)
:
+2kπ (k
Z)
:
x![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5039751960da8655b69dc15e2fb6ee2.png)
其中真命题的是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c3726fe0b0698826dc623f269e179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db93f5ae179d970e478cb43b8030291c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baac50f844ebc073cbd706eac150c4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6565011c3dba4e85492866f3978ae326.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adad9633b73dfbbb3d84b4f15979e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c3726fe0b0698826dc623f269e179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e40d565a6db5be4184292ec6597367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b21b872313f7d8c5b606981f954a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74734034b6c699f0de0c656b979e18a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc119550ce4fc5f3d1daf996e7243bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dac463bbb7375dbf8e2246f9a6f0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833e2bf39c550dd4840d7dcdc1ed3a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5039751960da8655b69dc15e2fb6ee2.png)
其中真命题的是 ( )
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次