1 . 样本数据
的中位数和平均数分别为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37793fd8fcc354f0903336cc285a9e94.png)
A.34,35 | B.34,34 | C.34.5,35 | D.34.5,34 |
您最近一年使用:0次
解题方法
2 . 已知集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe3472f579eae83f732360babcc2ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc3a2245d384fe6182a629234bccdf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7656e2b4c3b5beb7e266814f016de61c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e5e1e33c1259195f7bb0198a3e6f65a.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
4 .
中
项的系数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06354bf6277f56376dd1ef796eada1d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 若
, 则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7532b296f7c2bfb2ec2bf9ead4d0f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a080cab44a7d3605430d67b207f9be.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 有下列一组数据:
,则这组数据的第
百分位数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4d19d905fdf4387129f0d299b15a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知抛物线
的焦点为
,
上一点
到焦点
的距离为
,过焦点
的直线
与抛物线交于
两点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786b33c4a54b7db3b01b2bb4c642b4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afd91121bcd66f82a5186205b676bd9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 若集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad84dd75438cc09b89efb924839e565.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605cf92d704b8fd218e1a1bba267ffae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1336d38741aab2255a35c26612bbd7cc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 已知函数
在区间
上单调递增,则
的最大值( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa5e01a42421e4aabee073b6f552f18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知曲线
,则“
”是“曲线
的焦点在
轴上的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983f8f88f89b20e481ffcfd514d1200f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c862f60f987c01c1b6cfa364fae128d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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 |
您最近一年使用:0次