2024·全国·模拟预测
1 . 已知数列
满足
,数列
的前
项和为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6714fb21bf191d0cf764df199475d9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/9b2778e2dadff4d91102e6046bb5def8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 在
中,角A,B,C的对边分别为a,b,c.点M是
的内心.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75835ac147d3ab1a8a54f06d1271873d.png)
,则
的最小值为______ ,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75835ac147d3ab1a8a54f06d1271873d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04baa4bae5d52fe9d106aab4334a026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a60237e8d1bca2cbfcabbcef530b7d1.png)
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3 . 若复数z满足
,则z的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a55b73f528d0912c9cb7a04a78c73aa.png)
A.14 | B.―8 | C.![]() | D.5 |
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4 . 莫利定理,也称为莫雷角三分线定理,是由英国数学家法兰克·莫利于1899年左右发现的一个几何定理.该定理的内容如下:将任意三角形的三个内角三等分,则靠近某边的两条三分角线相交得到3个交点,这样的三个交点可以构成一个等边三角形.这个三角形常被称作莫利正三角形.如图,在等腰直角
中,
,
,
是
的莫利正三角形,则
的边长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e587c886cd9f7d48f0cce82dcb940c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6296933464b20fd98082a0cbc731f7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 如图,已知三棱柱
的侧棱垂直于底面,
,
,点
,
分别为
和
的中点.
平面
;
(2)设
,当
为何值时,
平面
?试证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f2185273bf04c11118c7954f7ec822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e316b0bba952ea2164c5321c6c3c41f5.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16a58bdc70158aeb2eab89444467bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c25c4259d935d6e6fabe5c3fc1f43c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea4670e0e061a255af3621d30855011.png)
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6 . 设
是虚数单位,若复数
的实部是1,且
的虚部是2,则复数
的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4aeb550de57077edc18b8a851c9b4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.1 | D.2 |
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2卷引用:2024届湖南省衡阳市雁峰区衡阳市第八中学高三模拟预测数学试题
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7 . 设
是平面内的一个基底,则下面的四组向量不能构成基底的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a341ba62373f3286b0a3425cbc3f79.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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2024-05-06更新
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279次组卷
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5卷引用:湖南省耒阳市第一中学2023-2024学年高一下学期第三次月考数学试题
湖南省耒阳市第一中学2023-2024学年高一下学期第三次月考数学试题浙江省宁波市五校联盟2023-2024学年高一下学期4月期中联考数学试题(已下线)专题01 平面向量(2)-期末考点大串讲(苏教版(2019))(已下线)专题01 向量基底、四心及其应用(1)-期末考点大串讲(苏教版(2019))江苏省无锡市江阴市两校联考2023-2024学年高一下学期5月阶段检测数学试题
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8 . 已知向量
满足
,
.
(1)若
,求
的值;
(2)若
,求
在
上的投影向量的模.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e310702748855c3edccd151aae0143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3551e9998e13f08a21bee1e2cefa5e62.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e397b9490e0e3e0b24908ca21d68f174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d51bb574bbf9953cc4bee290cebffe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683a0e69dfb864c40ec858cd819568f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2024-05-06更新
|
391次组卷
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2卷引用:湖南省耒阳市第一中学2023-2024学年高一下学期第三次月考数学试题
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9 . 已知椭圆
的中心为原点,焦点为
,
,以
为圆心,
为半径的圆交椭圆
于
、
两点,且
,则椭圆
的方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813f9a2814013e2407b5b1c216159359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd15503ee692f8286b0312f7c6f0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdfc6a59392d1ac3cd89ddc0308864c.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/4e8fbf086aad2a16a7c6a25dd0d0e866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知向量
,
满足
,
,且
与
的夹角为
.
(1)求
及
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fddfe7860565faf6cbc2c08fb4a0d6a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58147890c9fc5fdab3120e88d7e49b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76dde16b05fba6fc61779511e63f34fe.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbff272946c33b524dd3c0be9bcfc651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b551c01b86a6f365f794d427656fb2d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64c995510d3e95ab634d947863255d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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