解题方法
1 . 已知单位向量
,
的夹角为
,
,
.
(1)求
;
(2)求
与
的夹角余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3453e44d1e3145ad1338cb0f9f78d9dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4120beb5821a0b9d1a88bcbd041c68.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e16eb319ee454088f5b527cf6c4d5.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
您最近一年使用:0次
2024-06-04更新
|
230次组卷
|
2卷引用:陕西省宝鸡市扶风县法门高中2023-2024学年高一下学期期中考试数学试卷
名校
解题方法
2 . 已知椭圆
的左、右焦点分别为
,动直线
过点
与椭圆
相交于
两点.
(1)当
轴时,求
的外接圆的方程;
(2)求
内切圆半径的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2242ca20bd7ab3d41b128e10a4071521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165a501b2e6a3acc46212e59a166c053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
您最近一年使用:0次
2024-06-04更新
|
35次组卷
|
2卷引用:陕西省宝鸡市长岭中学2023-2024学年高二上学期期中考试数学试题
解题方法
3 . 在平面直角坐标系
中,点
到点
与到直线
的距离之比为
,记点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)若点
是圆
上的一点(不在坐标轴上),过点
作曲线
的两条切线,切点分别为
,记直线
的斜率分别为
,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d35465f3e40ce00a1dce54b943ae183.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3fca53644cf24484329601c41d55b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
您最近一年使用:0次
4 . 为庆祝3.8妇女节,某中学准备举行教职工排球比赛,赛制要求每个年级派出十名老师分为两支队伍,每支队伍五人,并要求每支队伍至少有两名女老师,现高二年级共有4名男老师,6名女老师报名参加比赛.
(1)高二年级一共有多少不同的分组方案?
(2)若甲,乙两位男老师和丙,丁,戊三位女老师组成的队伍顺利夺得冠军,在领奖合影时从左到右站成一排,丙不宜站最右端,丁和戊要站在相邻的位置,则一共有多少种排列方式?
(1)高二年级一共有多少不同的分组方案?
(2)若甲,乙两位男老师和丙,丁,戊三位女老师组成的队伍顺利夺得冠军,在领奖合影时从左到右站成一排,丙不宜站最右端,丁和戊要站在相邻的位置,则一共有多少种排列方式?
您最近一年使用:0次
2024-04-13更新
|
511次组卷
|
2卷引用:陕西省千阳县中学2023-2024学年高二下学期4月月考数学试卷
名校
5 . 已知椭圆
,其左、右焦点分别为
,
,离心率
,点P为该椭圆上一点,且满足
,已知
的内切圆的面积为
,求该椭圆的长轴长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/d5c7316976a221c051a2c14df80b1347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db634c178cd7bffbd4cb886e3f2cca22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c055a02fba0827ffcaa92f73ce7720.png)
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名校
解题方法
6 . 已知幂函数
过点
,令
,
,记数列
的前n项和为
,则
时,求n.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e7d192c1c988462b773b36fe0bc169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc33497c7c3b9c7c2126f46ca726995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89df2968be3d4933b0e74bc154aaa753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b01041691ad489f126f05c18ea8f0fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634f439d13a208bbefdd8982c29655dc.png)
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名校
解题方法
7 . 双曲线C的两个焦点为
,
,以C的实轴为直径的圆记为D,过
作D的切线与双曲线C的两支分别交于M,N两点.且
,求双曲线C的离心率.
![](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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281858449bb3013350304c2e5a1ec950.png)
您最近一年使用:0次
8 . 已知函数
,其相邻两个对称中心之间的距离为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2359bda8e68c28227aff124cab798707.png)
(1)求实数
的值及函数
的单调递增区间;
(2)求函数
在
上的最大值和最小值;
(3)设
,若函数
在
上有两个不同零点,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9233cfe338f1b3a0c01121cb089d254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2359bda8e68c28227aff124cab798707.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/227c3edc46250f9da302f895d2f8ef33.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd1017814e9883c21b17e43703a7272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/227c3edc46250f9da302f895d2f8ef33.png)
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2024-04-07更新
|
1306次组卷
|
2卷引用:陕西省宝鸡市金台区2023-2024学年高一上学期期末质量检测数学试题
解题方法
9 . 已知函数
是指数函数.
(1)求
的表达式;
(2)判断
的奇偶性,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256de241741865f4e722b16f2ec4f98b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b97b96f6473fa08381a6b3d7993fedb.png)
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解题方法
10 . 已知函数
.
(1)求
的最小值;
(2)若
时,
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b70a202103574afcbbd4c34cf5127c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf1fba67d258d45304cd866545b9747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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2024-04-03更新
|
263次组卷
|
2卷引用:陕西省宝鸡市2024届高三下学期高考模拟检测(二)文科数学试题