12-13高三下·重庆·阶段练习
1 . 给出以下命题:
① 双曲线
的渐近线方程为
;
② 命题
“
,
”是真命题;
③ 已知线性回归方程为
,当变量
增加
个单位,其预报值平均增加
个单位;
④ 设随机变量
服从正态分布
,若
,则
;
⑤ 已知
,
,
,
,依照以上各式的规律,得到一般性的等式为
,(
)
则正确命题的序号为________________ (写出所有正确命题的序号).
① 双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acca1c00ee33a8d7aabf1d626541259e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95b60de1f6993edd7275bcf8b9527dd.png)
② 命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51441c8788ff11be766766227793246d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7eb222c30d40a968d6667b2d449bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a264a1aa04dde67e2e78100945e09e1.png)
③ 已知线性回归方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8a20de7a89ee822d3e55db1205cef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
④ 设随机变量
![](https://img.xkw.com/dksih/QBM/2013/5/5/1571206609248256/1571206614810624/STEM/9ac78b8cd0d64613961dc9e7d9b3c3a8.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcadfe766e5ce650c693bb394fb7473d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/263ce586145227444e4ec3e4a90fa6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6a96069c523416157f629f3c364cea.png)
⑤ 已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41dfdce938211349a4a8ca38eea07d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00664e3d1e38b11620ec99cb53e12100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aad616036618921c5721d2c3ef74bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab13d30a44b3224235914ed84f3453b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19fc7c5ab1e956d3c9a5aae548e2fae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acedd683a7c98c2952785e4ac1df4785.png)
则正确命题的序号为
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23-24高二上·全国·课后作业
2 . 在平面直角坐标系中,下列三个结论:
①每一条直线都有点斜式方程;
②方程
与方程
可表示同一条直线;
③直线
过点
,倾斜角为
,则其方程为
.
其中正确结论的序号为______ .
①每一条直线都有点斜式方程;
②方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1710cf3a23c5e714f5d1874267db75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1c526b1a9890dd468d86f87a56063d.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
其中正确结论的序号为
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9-10高一下·辽宁本溪·期末
名校
3 . 下列说法:①第二象限角比第一象限角大;②设
是第二象限角,则
;③三角形的内角是第一象限角或第二象限角;④函数
是最小正周期为
的周期函数;⑤在△ABC中,若
,则A>B.其中正确的是___________ (写出所有正确说法的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173969e1acd0789efcadc4ca3edbc2d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47275e9eb7d49a2199867a98bf874d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1108740ffdf872a2d32975204f4e0147.png)
您最近一年使用:0次