在空间直角坐标系中,平行四边形
的三个顶点为
.
(1)求
的坐标;
(2)求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0692247f1c4a1f306adb3daaeba0fa15.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
23-24高二上·广东深圳·期中 查看更多[2]
更新时间:2023-10-26 10:07:54
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解答题-问答题
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【推荐1】如图,已知点O为平面直角坐标系的原点,点A的坐标为
,点B的坐标为
,作
,垂足为点D.
,
,
;
(2)求
;
(3)将
绕点
逆时针旋转
到
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(4)求
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(5)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ac47e00605ce2f4511d66bd933b073.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad71547a1a45cc7b11d6ecde59884c7.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
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(4)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a0abdf3eea0772418890031971fb56.png)
(5)求
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【推荐2】已知
为坐标原点,
,
.
(1)判断
的形状,并给予证明;
(2)若
,求证:
、
、
三点共线;
(3)若
是线段
上靠近点
的四等分点,求
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51116e96f4c35d90677e91e0aa914111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9612a17c77d5d6ded6123e12f9c8914.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bdb30cad5418d2b634e697d2d8e46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解题方法
【推荐1】设直线
与抛物线
交于
,
两点,
为坐标原点.
(1)求
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(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa3227349546a6cc56ab8a3c3ee3057.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ace585d3cc2e113a0927cdf9e56756a.png)
(2)求
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【推荐2】已知向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f95989585ef589b1c705de4a7fe4062.png)
(1)
,求实数
的值;
(2)向量
与向量
的夹角大于
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f95989585ef589b1c705de4a7fe4062.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3f15c80bc31daa38ead1535b4b3a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b703b04ee16d102e7e5ea9fff72d500d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d5d06c8ba359e2f95bd6abbeb9d696.png)
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名校
【推荐3】在平面直角坐标系
中,已知点
,点
是直线
上的一个动点.
(1)求
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的坐标;
(3)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df2495050da0b4a081bc5b29dbb0dd4.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d42133b3e5cc0b71837fa670f3cd2ff.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d4ab45e8e8f0084d8d90a4c1233d86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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【推荐1】已知向量
,
,
.
(1)设
,求
的模;
(2)若
与
垂直,求
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(3)求向量
与
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b981b38133d5d65060dd8ff4d65a66be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f088d018cbdd8421d3496589d50b631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0853cfaccd77a93412db3502afff40f.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b8e17bc617156bcf21a160728dbf15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2b0627ff70b02aa16b007dc41794dc.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
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名校
【推荐2】已知
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
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(2)设
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【推荐3】已知
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(2)求
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