1 . 已知函数
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39d4e199031b74357e9fbd723916fbc.png)
A.![]() |
B.![]() ![]() |
C.方程![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
2 . 正三棱柱
中,
为棱
的中点,
为线段
(不包括端点)上一动点,
分别为棱
上靠近点
的三等分点,过
作三棱柱
的截面
,使得
垂直于
且交
于点
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31dea35a4e0ca65105e1f12aeb0fe5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.![]() ![]() | B.存在点![]() ![]() ![]() |
C.当![]() ![]() ![]() | D.三棱锥![]() ![]() |
您最近一年使用:0次
7日内更新
|
325次组卷
|
3卷引用:河南省安阳市林州市第一中学2023-2024学年高一下学期5月月考数学试题
河南省安阳市林州市第一中学2023-2024学年高一下学期5月月考数学试题安徽省县中联盟(江南十校)2023-2024学年高一下学期5月月考数学试题(已下线)专题07 立体几何小题常考题型归类-期末考点大串讲(人教B版2019必修第四册)
名校
3 . 已知方程
,下面四个命题是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608e3b6e18246d45521a240b5bfc5009.png)
A.当![]() |
B.当![]() ![]() |
C.当![]() |
D.当![]() ![]() |
您最近一年使用:0次
4 . 已知抛物线
的焦点为
,
,
为
上的两点,过
,
作
的两条切线交于点
,设两条切线的斜率分别为
,
,直线
的斜率为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e1ba94066bb15ce4f20d8990885d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
7日内更新
|
230次组卷
|
4卷引用:河南省部分重点高中(金科未来)2023-2024学年高二下学期5月大联考数学试题
河南省部分重点高中(金科未来)2023-2024学年高二下学期5月大联考数学试题河南省部分重点高中2023-2024学年高二下学期5月质量检测数学试题(已下线)湖南省岳阳市第一中学等多校2023-2024学年高二下学期5月月考数学试题山西省临汾市部分学校2023-2024学年高二下学期5月质量检测数学试题
名校
5 . 刻画空间的弯曲性是几何研究的重要内容,用曲率刻画空间的弯曲性,规定:多面体顶点的曲率等于
与多面体在该点的面角之和的差,其中多面体的面的内角叫做多面体的面角,角度用弧度制.例如:正方体每个顶点均有3个面角,每个面角均为
,故其各个顶点的曲率均为
.如图,在直三棱柱
中,
,点
的曲率为
分别为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e2d7c958e99bcd9d7f251c19ee3544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62837b40813c7cd7959f4e77eeca8a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4c9668ea27ff0d5323dbf8c65ddcd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df332962ba616c7ef45a0523d410c95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53477a5d40457f154d8afe0bcec4a549.png)
A.直线![]() ![]() |
B.在三棱柱![]() ![]() ![]() |
C.在四面体![]() ![]() ![]() |
D.二面角![]() ![]() |
您最近一年使用:0次
7日内更新
|
670次组卷
|
5卷引用:河南省创新发展联盟2023-2024学年高一下学期第三次月考(5月)数学试题
6 . 空间直角坐标系中的动点
的轨迹为
,其中
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f050923b095bdcc7773b863fa61566d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0205ec4f31ce64fed95f08f6f18767.png)
A.存在定直线![]() ![]() ![]() |
B.存在定点![]() ![]() ![]() |
C.![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
7日内更新
|
151次组卷
|
2卷引用:2024届河南省名校联盟考前模拟大联考三模数学试题
7 . 正方体
的棱长为1,
,
,
分别为
,
,
的中点.则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.直线![]() ![]() | B.直线![]() ![]() |
C.平面![]() ![]() | D.点![]() ![]() ![]() |
您最近一年使用:0次
7日内更新
|
676次组卷
|
2卷引用:河南省信阳市信阳高级中学贤岭校区2023-2024学年高一下学期6月月考数学试题
名校
解题方法
8 . 已知双曲线
的右顶点为
,左、右焦点分别为
,
,离心率为
,点
,
都在
上(均不与点
重合),且关于
轴对称,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c8091d78595c42d437ff5766431a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/d053b14c8588eee2acbbe44fc37a6886.png)
A.![]() |
B.若存在点![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
9 . 定义无穷有界级数
,且零项级数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e98736a9e246a381956a44f286b108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489340c9a2d70c00bae13b7018cad448.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
名校
10 . 已知三棱锥
是边长为2的正三角形,
分别是
的中点,
在平面
内的投影为点
在平面
内的投影为点
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/899bb37ff0e8075cf8cf7d589be7d50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a398d4645333a88e4a0816d5b7087702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b085fab4fc7b49bead663650b3bdeb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9521129014e5f138b49339d5b9f4dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f526e2fe627bb4ddebe708c07d0a22fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() |
B.![]() ![]() ![]() |
C.![]() |
D.形如三棱锥![]() |
您最近一年使用:0次
2024-06-12更新
|
445次组卷
|
2卷引用:河南省郑州市2024届高三第三次质量预测数学试题