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1 . 如图,在五面体ABCDEF中,
,
,
,
平面ABCD,平面
平面ABCD,二面角A-DC-F的大小为60°.
(2)点P在线段AB上,且
,求二面角P-FC-B的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04794c6315479f9fe51379c7923c907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b977338c3f71d087e73daa8db99ed7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073a88b42836fb88433679932b48ad03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
(2)点P在线段AB上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2700a3103aef7c7cdb1ab54bf964639b.png)
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解题方法
2 . 定义运算
,则满足
(
为虚数单位)的复数z在复平面内对应的点在( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fec025453bac0d34d5e9bdf61a6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b5708a49d05ad9bb15e9e69d9ef826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
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解题方法
3 . 六氟化硫,化学式为
,在常压下是一种无色、无臭、无毒、不燃的稳定气体,有良好的绝缘性,在电器工业方面具有广泛用途.六氟化硫结构为正八面体结构,如图所示,硫原子位于正八面体的中心,6个氟原子分别位于正八面体的6个顶点,若相邻两个氟原子之间的距离为
,则下列错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19be28d470f120dfa7cb3b1837122e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.该正八面体结构的外接球表面积为![]() |
B.该正八面体结构的内切球表面积为![]() |
C.该正八面体结构的表面积为![]() |
D.该正八面体结构的体积为![]() |
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4 . 如图,已知四边形
是平行四边形,
分别是
的中点,点P在平面
内的射影为
与平面
所成角的正切值为2,则直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1457d2e76a5b86de1abf121c51eb9d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0a09ed9c929979697fa393e01940aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 龙洗,古代中国盥洗用具,状貌像鼎,用青铜铸造,因盆内有龙纹而称之为龙洗,中国传说中也称作聚宝盆.其盆体可以近似看作一个圆台,现有一龙洗盆高
,盆口直径
,盆底直径
.现往盆内注水,当水深为
时,则盆内水的体积为( )(圆台的体积公式:
,其中
分别表示圆台上下底面的面积)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689ff84e2d7f52c7446ef789a54557da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb6ba6a20d59ed6800fdd0e2ca5727c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689ff84e2d7f52c7446ef789a54557da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38bac9fcbf789ef94cb8bfee0f45638d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a62d1cf4d25dfe5cc4888849bdc07a4e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:四川省峨眉市第二中学校2024届高三适应性考试暨押题数学(文)试题
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6 . 在等比数列
中,
是函数
的两个极值点,若
,则t的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd67f7444756faf766876de3fc6b1084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe34fddc0248037344564149a03a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f93c932af7de2f59447846c57fe52a0.png)
A.![]() | B.![]() | C.4 | D.5 |
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解题方法
7 . 已知双曲线
的左、右顶点分别为
,
,渐近线方程为
,过左焦点
的直线
与
交于
,
两点.
(1)设直线
,
的斜率分别为
,
,求
的值;
(2)若直线
与直线
的交点为
,试问双曲线
上是否存在定点
,使得
的面积为定值?若存在,求出定点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.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/9b6bb019e2d7c6d17d15ec4d9043f5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030700126fb012f13935f57780b96677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
(1)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.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/b4757181824e15e0f21e5bdd55448783.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdae78f4d3b8d8213ac3ac9a9567eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e29303195c563855aee4c14cbcb9bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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|
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3卷引用:吉林省长春市实验中学2023-2024学年高三下学期对位演练考试数学试卷(七)
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8 . 棱长为
的正方体
中,
为棱
的中点,
为正方形
内一个动点(包括边界),且
平面
,则当三棱锥
体积取最大时,其外接球的表面积为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](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/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a73120cd0988eb4a63436e7a4b9470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ea211a573491409cb60f9fbe9a65cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640aa89f8c302356d2dfe5ccf7c054b0.png)
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9 . 在
中,角
的对边分别为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6cf7c342ca03223c26581d35f049a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
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10 . 已知抛物线
的焦点为
,点
在抛物线
上,点
在
轴上的投影为点
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1ba86ffc6e5542b62319848c14acaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0152399693533f1c3b70693bb16907ba.png)
A.1 | B.![]() | C.![]() | D.![]() |
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3卷引用:陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题