1 . 如图1,在四面体
中,点
分别为线段
的中点,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/881ec4ef24907683dd46062e5ff149c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9dda0dd9f20ab49de6bd5cf6297f9f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f12763b7b929dbf2791735248029bac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/2040c859-6d33-401d-a63a-43633dbc2c7b.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.1 |
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2卷引用:江苏省徐州市铜山区2023-2024学年高二下学期3月月考数学试卷
名校
2 . 在空间直角坐标系
中,已知向量
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1259336a19ab810c07406ee5303ca699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc7ede190ef415a46155e6159a5509a.png)
A.向量![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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3 . 若
构成空间的一个基底,则下列向量共面的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed18a92338c7578c18a5ba3a2ae1ed4.png)
A.![]() ![]() ![]() | B.![]() ![]() ![]() | C.![]() ![]() ![]() | D.![]() ![]() ![]() |
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解题方法
4 . 已知抛物线
过点
,直线l与C交于A,B两点,且
.
(1)当l垂直于x轴时,求
的面积;
(2)若
,D为垂足,求点D到直线
的距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dbcf0320d94734aedd3d4e2e31b9827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
(1)当l垂直于x轴时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93177a5ab81d1dd3969dac51ccf41880.png)
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5 . 已知P是椭圆
上的一个动点,点
,则
的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d625ef286a65b2dfa46c308ed95ea0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a12cd3eb8424b28cf530a0997a11d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13ec9a812274ad0839f20ba17348687.png)
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名校
6 . 已知,四棱锥
,底面
是正方形,M为棱
的中点,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/3fab947a-56da-4f4a-afbf-5805e66d9723.png?resizew=146)
(1)求证:
平面
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77c764472171ef71b3dbc0b8534da35.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/3fab947a-56da-4f4a-afbf-5805e66d9723.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
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2024-02-10更新
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7 . 已知双曲线
的左、右焦点分别为
,点P在C的右支上,过点P的直线l与C的两条渐近线分别交于点M,N,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c75eba5051fb2a61e0f5ac08e658d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
A.![]() |
B.与C仅有公共点P的直线共有三条 |
C.若![]() ![]() |
D.若l与C相切于点![]() ![]() |
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解题方法
8 . 已知点
在
确定的平面内,
是平面
外任意一点,若正实数
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5740b8809173a0ca14fcf1b46cd643c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9c66bf1a315bfee6c368135be638ad.png)
A.![]() | B.![]() | C.2 | D.4 |
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2024-01-29更新
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3卷引用:江苏省睢宁高级中学2023-2024学年高二下学期3月学情检测数学试卷
名校
解题方法
9 . 在空间直角坐标系
中,已知点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cf4881ebb11e41972186ed6b55ad43.png)
A.![]() |
B.异面直线![]() ![]() ![]() |
C.![]() |
D.![]() ![]() ![]() |
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解题方法
10 . 已知数列
的首项为2,前n项和为
,且
.
(1)证明:
为等比数列;
(2)设
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d33561ba61f3d7342d23ab2b4a57335.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3936fa1aa511122a6b2592e1e09a9de0.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae6ce55c655f36df79116d877889a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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