名校
解题方法
1 . 已知函数
,其中
.
(1)当
时,求
的最小值;
(2)若
在
上单调递增,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43ea66e63585a0785f4dee1d38098e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289fdf3d7182a4b6fbca0a2925fbec01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
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解题方法
2 . 已知角
的顶点是直角坐标系的原点,始边与x轴的非负半轴重合,终边与单位圆交于点
,且角
是第三象限角.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9d027a9390be51dfff11bd27d32d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48aa264b041a9af857c9de4aa79e4558.png)
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解题方法
3 . 已知函数
,且
.
(1)求函数
的解析式;
(2)判断
在区间
上的单调性,并用函数单调性的定义证明你的判断.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f44e619b41991f2002cc203be8d6f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b5320a6f673d6c2e70a815adaf2440.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
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4 . 已知函数
的部分图像如图所示.
(1)求
的解析式及最小正周期;
(2)先将
的图像上所有点的横坐标不变,纵坐标变为原来的
,再向右平移
个单位长度,最后将所得图像向上平移1个单位长度后得到
的图像,求函数
在
上的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657ef2e8b5e70f22c3e27535b920dff9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/27/6718893b-03fb-4120-b7b7-4a0420aecf56.png?resizew=180)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)先将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb076bad84890e24dbdc945ad543cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b0d9b2fc1639ca697fb14634947636.png)
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5 . 已知函数
.
(1)当
时,求
的值;
(2)若函数
为偶函数,求
的值;
(3)若
的图象的两条对称轴间的最小距离小于
,且函数
在区间
上单调递增,求ω的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9dd06b4134369476def86f19336e2f7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dcee772e6187ac31d7f8d69b0487000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353bf60fad68eeeb096d07560fda0295.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec7403cbe20cd2fbb1599527c17de40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abfb55e8443ecf97535f8e189a76c60.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf1f865bafd4a820406d336d99f8091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cd506a2101e3ff86778151cf43396.png)
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6 . 在平面直角坐标系xOy中,圆
,以原点O为极点,x轴正半轴为极轴建立极坐标系,直线
平分圆M的周长.
(1)求圆M的极坐标方程;
(2)过O作两条互相垂直的直线
,
,其中
与圆M交于O,A两点,
与圆M交于O,B两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361fd87ce03f78d4cc1f350b559bca46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2ede180a4e9daa5ad73a537e791825.png)
(1)求圆M的极坐标方程;
(2)过O作两条互相垂直的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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解题方法
7 . 2022年2月4日,第24届冬奥会在中国北京和张家口举行.为了宣传北京冬奥会,某大学从全校学生中随机抽取了110名学生,对是否喜欢冬季体育运动情况进行了问卷调查,得到如下列联表:
(1)请将上面的列联表补充完整;
(2)判断能否有
的把握认为是否喜欢冬季体育运动与性别有关?
附:
,其中
.
喜欢 | 不喜欢 | 合计 | |
男生 | 10 | ||
女生 | 50 | ||
合计 | 30 |
(2)判断能否有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a363cc53497fdfac77b43f656424f973.png)
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8ec200973736ac8bcd9aa633855d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | 0.025 | 0.010 | 0.005 |
![]() | 5.024 | 6.635 | 7.879 |
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8 . 在平面直角坐标系
中,圆
,以原点
为极点,
轴正半轴为极轴建立极坐标系,圆心
在直线
上.
(1)求圆
的极坐标方程;
(2)过
作两条互相垂直的直线
,其中
与圆
交于
两点,
与圆
交于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a58b2a88e160e523bdc0f953ea0ed08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce90d1e663ca4df813f44dbd81da14a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f65c19068583d5a7704f635ee24dc7f.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9cda46e575acf64941ea0964b89ee99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc62c28c53286cd17e9eb997af7221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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9 . 已知三棱柱
中,
,
,
平面
,
,
为
的中点,
为
上一点.请用空间向量知识解答下列问题:
(1)求证:
平面
;
(2)当
为
的中点时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cb239a35eb1f0563b5863d986859bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/25/427635e6-17c0-420a-ac8a-8d864acf7e67.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e31d02b38f82bfa005385f1e17d364.png)
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解题方法
10 . 已知椭圆
过点
,且离心率
.
(1)求椭圆E的方程;
(2)若直线
与椭圆E相交于M,N两点,与y轴相交于点
,且满足
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a729f65506a266d731b6c8646ea6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(1)求椭圆E的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd2d7156d9e4cd83b605c922b63856e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b375f4176d92100b2fba054aec1f9f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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