1 . 计算:(用数字作答)
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403d128ea029ebbe0f61eea8874a5f43.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0b51445e7a6725b06ffb0654ba77f7.png)
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2 . 求双曲线C:
的焦点坐标、实轴长、虚轴长、渐近线方程和离心率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff70ebf6fe1445882fa79762f39b0d7c.png)
您最近一年使用:0次
解题方法
3 . 已知
的顶点坐标分别为
,求
边上的高
所在的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e57f2f74e225567f9800be271cb8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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4 . 在长方体
中,
,
,
.以D为原点,以
为空间的一个单位正交基底,建立空间直角坐标系
,求平面
的法向量.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462b1c65b1b233ab98a90c164c0968c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d28e124a6e542e5b225a3cce2f377b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028856d5101687dd8eaf130846489cfd.png)
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5 . 如图E,F分别是长方体
的棱AB,CD的中点,化简下列表达式:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/51a0554b-3a4d-46f3-b567-adc5b1a92354.png?resizew=196)
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/51a0554b-3a4d-46f3-b567-adc5b1a92354.png?resizew=196)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8bff9897ed3b72ee1fdbe43ec93f0dd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b62e7149eba7c5306cd4b0fa59c91d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1bc880720c71266c8a705c23405bff9.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db454f0bc155736ecc94f0efd1bd09e.png)
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6 . 如图,在平行六面体
中,
,
,
,
,
,求:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/2cbb9c5d-de80-4e31-ace2-02ec91679411.png?resizew=166)
(1)
;
(2)
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5600c2061f6e12991bf271a4a3ab51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7cfd839b35f8db9d0f5b588679c6b3f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/2cbb9c5d-de80-4e31-ace2-02ec91679411.png?resizew=166)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebbf35fa5d3b105ca1e86456480d49d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943712a5e96b16cc15d775cc4687237e.png)
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7 . (1)写出下列圆的标准方程:
①圆心为
,半径是
;
②圆心为
,且经过点
.
(2)求下列各圆的圆心坐标和半径:
①
;
②
.
①圆心为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b063eeaab72d954d1a3b55acdb6ba73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
②圆心为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c45402cf781f311892427024da56c9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50471cd3e5a394a9bb70f1b22b54f13e.png)
(2)求下列各圆的圆心坐标和半径:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f640fa495702192dc58cde44549f436.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2fa3999ee9d877c35e111ae1a3a47d.png)
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8 . (1)求点
到直线
的距离;
(2)求两条平行直线
与
间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c21dde2ad1e31c337bfb78c810ccb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1846c1b54b2134a38b277ef4c4e4e6a9.png)
(2)求两条平行直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d937d4bf2152bb2745d92361884b75a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19556a290cd4e98e84b584d30f466614.png)
您最近一年使用:0次
解题方法
9 . 求与椭圆
共焦点且过点
的双曲线方程及其焦距,实轴长,虚轴长,渐近线方程,离心率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
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10 . 如图,正方体
的棱长为2,E,F,G,H,I,J分别是棱
,
,
,AB,BC,
的中点,写出正六边形EFGHIJ各顶点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e257f9bac44f9f5df107a584b37b56b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d42170c7d4249f6b390823606c18c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ba7536b98e10c25aa2e62707db875d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f986a0d8f37177dcccfee3898a66fd00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ecac2dad4cffdd971fd23deacff3fc.png)
您最近一年使用:0次