1 . 设函数
图象上不同两点
,
处的切线的斜率分别是
,
,规定
(
为线段
的长度)叫做曲线
在点
与点
之间的“弯曲度”,给出以下命题:
①函数
图象上两点
与
的横坐标分别为1和
,则
;
②存在这样的函数,图象上任意两点之间的“弯曲度”为常数;
③设点
,
是抛物线
上不同的两点,则
;
④设曲线
(
是自然对数的底数)上不同两点
,
,则
.
其中真命题的序号为__________ .(将所有真命题的序号都填上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8605ae9897d5d6f0679b4aa80e014bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b3e87e9bb00d9ba09cb5660aebd76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06dec1301f52d3923c64aea1bd828872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c904567c3b3734e1eca8d042ef7a7b2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23d15dee432c6ec21c07ede26c339cd.png)
②存在这样的函数,图象上任意两点之间的“弯曲度”为常数;
③设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b629bea8e22de9bfc49158e2289871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0365dea7be19d5dfc46b9ef7517e7202.png)
④设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ebc919fadb27fdc889c20cc481c0e6.png)
其中真命题的序号为
您最近一年使用:0次
2 . 已知函数
,现有下列四个结论:
①
的最小正周期为
;
②
;
③
的图象关于直线
对称;
④
.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b381fba84b49b16d238b9485a053da2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d63a28c9bcb3f34824f1e64e67360e1.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f51280a3aee771944255bc564bc7613.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa18fe438caaec526c724f621c590d31.png)
其中所有正确结论的序号为( )
A.①③④ | B.①②④ | C.①③ | D.②④ |
您最近一年使用:0次
3 . 已知抛物线
和点
,直线
与抛物线
交于不同两点
,
,直线
与抛物线
交于另一点
.给出以下判断:
①以
为直径的圆与抛物线准线相离;
②直线
与直线
的斜率乘积为
;
③设过点
,
,
的圆的圆心坐标为
,半径为
,则
.
其中,所有正确判断的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ac8fa800c00933279f2b20e5034438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d161e8acdc95d6aa31000a5f4531f187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
③设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98fd67fb21b6b30b12bc6f29efea17c.png)
其中,所有正确判断的序号是( )
A.①② | B.①③ | C.②③ | D.①②③ |
您最近一年使用:0次
2020-04-14更新
|
1365次组卷
|
5卷引用:贵州省铜仁市石阡县民族中学2023届高三上学期期末联考数学模拟试题
4 . 如图是正方体的平面展开图.关于这个正方体,有以下判断:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/15/5d6a69a6-eafe-41a2-960e-6350fddeb6f4.png?resizew=159)
①与
所成的角为
②
∥平面
③ ④平面
∥平面
其中正确判断的序号是( ).
A.① ③ | B.② ③ | C.① ② ④ | D.② ③ ④ |
您最近一年使用:0次
2017-06-04更新
|
2449次组卷
|
7卷引用:贵州省思南中学2019-2020学年高一下学期期中考试数学试题
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