已知向量
,
,满足
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e3954c3e58c5a5989e1cbf8abe0f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2426b0395d36ac9f3633764a3da188fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac408a5d33731ec9026a0a0e21d071f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416798d5ea23732d5b49ef277dcb6f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0719844e0261af3b625d9673e5926.png)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21高一下·山东德州·期末 查看更多[2]
更新时间:2021-08-01 07:33:16
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单选题
|
适中
(0.65)
名校
解题方法
【推荐1】已知直线
上有三点
,
,
,
为
外一点,又等差数列
的前
项和为
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d04623f589b36898fc5b01d765b2ffdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
A.![]() | B.3 | C.![]() | D.![]() |
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【推荐2】如图,四边形ABCD是正方形,延长CD至点E,使得DE=CD.若点P为线段DC上的点,CP=PD.且
=m
+n
则m-n=
![](https://img.xkw.com/dksih/QBM/2018/4/17/1926211685236736/1928725626380288/STEM/e7740e68b4824c3d82c00114df5702f8.png?resizew=161)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c954e9d5256c2cafd92ae6d72a27d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d13e49cbbe44878c86bdfe9ada1e825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b91cce248ff0d7003b5ccf3bd346f8eb.png)
![](https://img.xkw.com/dksih/QBM/2018/4/17/1926211685236736/1928725626380288/STEM/e7740e68b4824c3d82c00114df5702f8.png?resizew=161)
A.1 | B.2 | C.-1 | D.![]() |
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【推荐3】已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389ad2439b1cd3b5e281c0ac41efd62a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2330ff42af66cfc40bd2add45a4a1cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/574a1bab042d637fe5f11110e7e51a9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐1】已知向量
,
是平面
内的两个不相等的非零向量,非零向量
在直线
上,则“
”是“
,且
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf94b1f973d45efad96789dbfcebb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e1a37a0cee9ad163ac39c2d5687db6.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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【推荐2】已知抛物线
上一定点B(1,1)和两个动点P、Q,当P在抛物线上运动时,BP⊥PQ,则Q点的纵坐标的取值范围是
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259713720320/1572259719733248/STEM/1fcbebc339d94d808d735ddc6a8bfc2e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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