题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233734-90686.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233734-90716.png)
③设随机变量X~N(0,1),若P(X≥1)=p,则P(-1<X<0)=
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233734-84503.png)
A.② | B.③ | C.②③ | D.①③ |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233734-90686.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233735-54065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233735-79679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233735-72479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233735-54065.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233735-68020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233736-28179.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233735-68020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233736-56001.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233734-84503.png)
核心考点
试题【在下列命题中,①“α=”是“sin α=1”的充要条件;② 4的展开式中的常数项为2;③设随机变量X~N(0,1),若P(X≥1)=p,则P(-1<X&l】;主要考察你对充要条件等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233729-99794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233729-62659.png)
A.∃x0∈R,ex0≤0 |
B.∀x∈R,2x>x2 |
C.a+b=0的充要条件是![]() |
D.a>1,b>1是ab>1的充分条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233715-89636.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233715-18875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233716-28386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233715-18875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233716-66408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102233716-22561.png)
A.充分必要条件 | B.充分但不必要条件 |
C.必要但不充分条件 | D.既不充分也不必要条件 |