已知向量
,
,
.
(Ⅰ)若关于
的方程
有解,求实数
的取值范围;
(Ⅱ)若
且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1a422c43877780a301b04d82f191cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6b7471965603e37c0108893e2cb28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4cbc22c7f20839183c64e4f5924d59.png)
(Ⅰ)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28638f8c054a7bb4d9b46fde330bc76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b55aa34fd5152abca9828c4581cd75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f63dc02238b087ff47e9aa5bf6759d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
更新时间:2018-01-21 14:58:09
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知
,且
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691b48516834786d97b5ce5112598223.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47b71f55aad06480160e3f39d3b39be.png)
您最近一年使用:0次
解答题-计算题
|
较易
(0.85)
解题方法
【推荐2】已知
,且
是第__________限角.
从①一,②二,③三,④四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
,
的值;
(2)化简求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
从①一,②二,③三,④四,这四个选项中选择一个你认为恰当的选项填在上面的横线上,并根据你的选择,解答以下问题:
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)化简求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c29497dda3b8965a0bb25d96dc596d1.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐3】已知
,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ebb96c73c0abf240bdc3f9d1ecec7b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a364ddc8b0f2831eaf40ef3f851210.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐1】已知向量
.
(1)若
,求λ的值;
(2)若
,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0766f4c253192de5eaa92c35a0bb713e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b958a367fa2f08b6202a5a6ebf5e9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaf5a89fd40c2e9cd7c91fdf5b741bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17bc248c846fa16ec9e2cd52b45c9c03.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】已知向量
,
.
(1)求
与
夹角的余弦值;
(2)
为何值时,
与
垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc1805ec3700c2838b450733bbde84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1077524ae154989e3f0f7a22439bc9d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afae9db82464afb37d387f6cbedc8139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐3】已知向量
,
,求:
(1)
,
;
(2)
与
夹角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a29b360f552c75ed218c966319f492c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e587626640f5dc20f7b7e20e30a10d00.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0fe4d834e8eaca89ceaf9c64cdabd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccf5af2912b02864d4c3981225fad8b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
您最近一年使用:0次