已知向量
,
.
Ⅰ
求
的值;
Ⅱ
求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391c81881dcf00e70ad06808006a8b4e.png)
Ⅲ
已知
,若向量
与
共线,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3130741493cd8f2d243375c8afdeca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39d1d88189726ae99c309644fca3494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391c81881dcf00e70ad06808006a8b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40436543cc51f42b5b5d93e55a407ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d31b07a2081bfaaf77c0062193ab173e.png)
更新时间:2019-02-14 15:38:49
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相似题推荐
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知
,
,且
,
的夹角为
.
(1)求
;
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f8a17a8e95b35daf028fc666ee39a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9aaaec4d9f4d0cef49569b3a89250a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff409cd3886c767afb13c9a869c5f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6570cd7c2f81c9fcffd2c64664f1564.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec280e0d05cedd865b25af9ce97a8e74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b706ce6d64c81a9af9d4bf5147f2688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】非零向量
不平行,且
与
平行,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41960bbc66bdc3b28be0138f83f9de5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80467aade72042974b1b2d1dbe5b3968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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适中
(0.65)
【推荐3】设椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc92b24cac47187d00ca831209629fdc.png)
的右焦点为
,直线
与
轴交于点
,若
(其中
为坐标原点).
(1)求椭圆
的方程;
(2)设
是椭圆
上的任意一点,
为圆
的任意一条直径(
、
为直径的两个端点),求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc92b24cac47187d00ca831209629fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c32c3fd934beec727e645566e43333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024a7e36af15ef4b918788b4c9d2e5b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96fdc94e78fec76b12b46326910d52c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014fb05e17da67d2d63fa51162357c60.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/3dcc2af6f0deebe17fc67ce8234655bd.png)
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【推荐1】已知过点
的动直线
与圆
相交于
,
两点,
是
中点,
与直线
相交于
.
(1)当
与
垂直时,求
的方程;
(2)当
时,求直线
的方程;
(3)探究
是否与直线
的倾斜角有关?若无关,求出其值;若有关,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0873a0f3245544b4451ec5d2570dbe41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c434abb1778a406a794336b0de0d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355c8e295cd0e7895a7bcabb31ebcf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd92ed9c7d216873545ea59101b6ce1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知向量
,
,函数
.
(1)求
的值;
(2)当
时,方程
有解,求实数m的取值范围;
(3)是否存在正实数a,使不等式
对所有
恒成立?若存在,求出a的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5293fecd02863a5c114292a926848add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d737534e949ac606e9402a1019ba71f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c25f1d401fe5fd8748bb7c89751493b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca21ed066d60137c02edee7641e2723.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f9c1b61b8617642d99b8fa0afef835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db7018a66646d403f5fe9ef5c914a0c.png)
(3)是否存在正实数a,使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c596c75da5aee891d20e3478aad348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f9c1b61b8617642d99b8fa0afef835.png)
您最近一年使用:0次
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适中
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【推荐3】在复平面内,
是原点,
,
对应的复数分别为
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26afea38e802325b3cad0145fa925701.png)
,
为虚数单位.设函数
.
(1)求函数
的单调递增区间;
(2)若函数
在区间
上有2个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfde0038de382d2be9701cea23ef7eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329fdf7d989f77a32ca9e0361a9cc956.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae88792336639274d4e3e6bfea2b8539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26afea38e802325b3cad0145fa925701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465f6a945a0df09d3b0384f95c8bb00c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9873ed071f6842c91dff46d44075ae27.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395da68595472e2a27a80f683ab1e127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f457df0f9d14437a7f0443bb297e6ee8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次