解题方法
1 . 若复数
与
都为纯虚数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97dbe9ca4029eb3ee37e4add7039d491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
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2 . 已知数列
各项均为正数,首项
,且数列
是以
为公差的等差数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8fd24f562ab2461699e593ee6ddfa10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfc875ca919921e8f63a6fca648561b.png)
A.![]() | B.![]() | C.1 | D.9 |
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2024-06-08更新
|
748次组卷
|
4卷引用:广东省韶关市乐昌市第二中学2024届高三下学期保温测试(5月模拟)数学试题
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3 . 下列说法不正确的是( )
A.正棱锥的底面是正多边形,侧面都是等腰三角形 |
B.棱台的各侧棱延长线必交于一点 |
C.用一个平面去截棱锥,底面与截面之间的部分是棱台 |
D.棱柱的侧棱都相等,侧面都是平行四边形 |
您最近一年使用:0次
2024-06-07更新
|
1073次组卷
|
6卷引用:广东省佛山市七校2023-2024学年高一下学期5月联考数学试卷
广东省佛山市七校2023-2024学年高一下学期5月联考数学试卷广东省江门市新会第一中学等2023-2024学年高一下学期5月联考数学试题(已下线)6.1 基本立体图形 同步精品课堂(北师大版2019必修第二册)(已下线)11.1.4 棱锥与棱台-【帮课堂】(人教B版2019必修第四册)江西省南昌市江西科技师范大学附属中学2023-2024学年高一下学期第二次月考数学试卷江西省南昌市江西科技学院附中2023-2024学年高一下学期5月份月考数学试卷
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4 . 已知水平放置的
是按“斜二测画法”得到如下图所示的直观图,其中
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edaee17b2a83037686af58dc5a8e6b9.png)
__________ ,则原
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90e7ef54e6bbcdec879f24ce3bb4a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3f521115d8becc81352e26f83d60f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8edaee17b2a83037686af58dc5a8e6b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
5 . 已知随机变量X的分布列为
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981a1cde2aefb846d30f461a39a1d062.png)
________ .
X | 0 | 10 | 100 |
P | 0.81 | ![]() | 0.09 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981a1cde2aefb846d30f461a39a1d062.png)
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6 . 函数
的图象在点
处的切线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b74763291316a9faec3d60fa7617e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b5a02983315012227085c59744aa621.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 等比数列
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5ef35b21da4cd8130642539d8245f83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cf962f8801d1a4845df3720f685e3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dbd9ff686703cad03aa383e5fec21.png)
A.![]() | B.![]() | C.1 | D.2 |
您最近一年使用:0次
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解题方法
8 . 已知等比数列
公比为
,前
项和为
,且满足
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9954d6701d2b7d8302684bb896a1afe.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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9 . 已知两条直线m,n和三个平面α,β,γ,下列命题正确的是( )
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
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10 . 定义两集合
的差集:
且
,已知集合
,
,则
的子集个数是( )个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396a6a8f9774d36d8af029d404ee07c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4e10255d9c38c5db2be76d20e809acb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b743b6904e6b739da17c1e5bb082289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87b4542219c8be7c8f19b81c55b005a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7474df966fe3085468537375a15f48e6.png)
A.2 | B.4 | C.8 | D.16 |
您最近一年使用:0次