名校
解题方法
1 . 正方体
外接球的体积为
,
、
、
分别为棱
的中点,则平面
截球的截面面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bea86620b6ce1284536813e1a74837.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/2425b69559600fbeb1f869eaafa30b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知函数
的极值点为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd328b299019b8427c74c39bac0235a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbc03249f9d6d092d0e4fa59fc65ad0.png)
A.![]() | B.2 | C.![]() | D.1 |
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3 . 如图,四面体
的每条棱长都等于2,
分别是棱
的中点,
分别为面
,面
,面
的重心.
面
;
(2)求平面
与平面
的夹角的余弦值;
(3)保持点
位置不变,在
内(包括边界)拖动点
,使直线
与平面
平行,求点
轨迹长度;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ae3327287e5093b663e96e8f9dcbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5262192e49cf903ee094457dbc250f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d9bc3fdf89de0b8e725961f8ddc096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e388bba4de84bc9d6919cb6aa9b72447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0f9bc9123d19a09babe8609cf12327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684d8fe0d6da7564247e47b948e3997.png)
(3)保持点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a373959bb9026f8a09845c0b828bf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0f9bc9123d19a09babe8609cf12327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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解题方法
4 . 已知抛物线
,焦点为
,点
为曲线
的准线与对称轴的交点,过
的直线
与抛物线
交于
两点.
(1)证明:当
时,
与抛物线相切;
(2)当
时,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/a0ed1ec316bc54c37c4286c208f55667.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/0ae6f48b9a53c0155a692509cf31f7e6.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d4a832771ba45d407f31000c8fcf37.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6901e8b018a80e917540462d2f3aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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解题方法
5 . 近年来,随着国家对新能源汽车产业的支持,很多国产新能源汽车迅速崛起,其因颜值高、动力充沛、提速快、空间大、用车成本低等特点得到民众的追捧,但是充电难成为影响新能源汽车销量的主要原因,国家为了加快新能源汽车的普及程度,在全国范围内逐步增建充电桩.某地区
年的充电桩数量及新能源汽车的年销量如表所示:
(1)已知可用线性回归模型拟合
与
的关系,请用相关系数加以说明(结果精确到0.001);
(2)求
关于
的线性回归方程,预测当该地区充电桩数量为24万台时,新能源汽车的年销量是多少万辆?
参考公式:相关系数
,回归方程
中斜率和截距的最小二乘估计公式分别为
,
.
参考数据:
,
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f28ebdb85e4a657c82ab2f6425b8c6.png)
年份 | 2019 | 2020 | 2021 | 2022 | 2023 |
充电桩数量![]() | 1 | 3 | 5 | 7 | 9 |
新能源汽车年销量![]() | 25 | 37 | 48 | 58 | 72 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
参考公式:相关系数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1227b49dea7f9f674d9f9bd01b7dce1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf74bbdee085c44778ac6191e5016b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1799947b98a6f022d4f91797a60e781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58291bd91befe1061530246da983727.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f83dd2051b5bc4044bac643aa99bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7a1c8826bbb8cd1fc1c11d5cff96c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9817c4bdec6e1606158318cdb17667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c32e4046dec1dba038544aaff06d6a5.png)
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解题方法
6 . 英国物理学家、数学家艾萨克·牛顿与德国哲学家、数学家戈特弗里德·莱布尼茨各自独立发明了微积分,其中牛顿在《流数法与无穷级数》
一书中,给出了高次代数方程的一种数值解法——牛顿法.如图,具体做法如下:一个函数的零点为
,先在
轴找初始点
,然后作
在点
处切线,切线与
轴交于点
,再作
在点
处切线,切线与
轴交于点
,再作
在点
处切线,以此类推,直到求得满足精度
的零点近似解
为止.
,初始点
,精度
,若按上述算法,求函数
的零点近似解满足精度时
的最小值(参考数据:
);
(2)设函数
,令
,且
,若函数
,
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd2638be8e76b7ce20f32accd865418d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437339c289bb04793753bfb127f2c689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423204bf2b2ea3f2f3149e50024b4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34632cf7058027def02525a8a0192b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5604a6f0518feb8d6b3614a63c4d61de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243989300efbd8c55ee767025490cac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac32cbe433e4360f46a12ebe57841ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a1dde83314d453181574bf00fa434d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34732ae551c25032c24dacba0f7d1506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e93be15318d221ab55a6a7890eb3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa32997808121b79607346a4e46c26f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214c2f418480c16be9481836e06643f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d03e6896c7f0e86c33e7b6b29b40d5.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62da56a08d6ba1f94a6167679a03cd34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3176cd8ccd41d19af14fc053a9f7532a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ef6f920cf01e61596caa2243af1619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefae68a891e01bd5832c462b90a54e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b942ae6d59bc0ba5b568a1bce5ef38cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96284d59f444eeb296135b54626c6a0.png)
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7 . 已知函数
.
(1)完善下面的表格并作出函数
在
上的图象:
的图象向右平
个单位后再向上平移1个单位得到
的图象,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619577f99d791be76ddb3886ebcdebf9.png)
(1)完善下面的表格并作出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4b61d912f99e5583e7e17cf8fef558.png)
0 | ||||||
1 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdedf17e4ac8ffb3f34ddbe3519ae8d0.png)
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8 .
的展开式中,
的系数是_____________________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b581a4e8c86f132ae6b7775c787bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f457e696b1504bfb73140699a8e18dd0.png)
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9 . 函数
定义域为
,函数
的定义域为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1419091ce43082c9d5aef167d51c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fac9b12c4190ea129a91a371524df43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4437ed14585a5b64036e9d4289d58b4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知椭圆
:
的左右焦点分别为
,
,将曲线
上所有点的横坐标变为原来的
倍,纵坐标变为原来的
倍,得到曲线
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbb63a88cfee74765e99b2f8ae3874d.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.曲线![]() |
B.曲线![]() ![]() |
C.曲线![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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