在棱长为2的正方体
中,点P是正方体棱上的一点(不包括棱的端点),若满足
的点P的个数为6,则m的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59cb01d7d2e11df0eecda0739a17b90.png)
更新时间:2020-03-22 23:41:58
|
相似题推荐
【推荐1】已知三棱锥
,
两两垂直且长度均为6,长为2的线段
的一个端点
在棱
上运动,另一个端点
在
内运动(含边界),则
的中点
的轨迹与三棱锥的面所围成的几何体的体积为_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c30da82e23039f2a4aff5a5ef3778ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80296cf61565c70148187de0664a169f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff36ac07c45c8d03cf3b7d8739c517ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/2011/2/26/1570014706270208/1570014711578624/STEM/f7ec3a3c-faa4-4750-9474-f7f176c443c4.png?resizew=279)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】如图,在直棱柱
中,各棱长均为
,
,则下列说法正确的是________
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973002548953088/2974277540159488/STEM/794438566e3540bdbd8aef4c6678ff13.png?resizew=167)
(1)三棱锥
外接球的表面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63dfa1a457921f589e7d27fffbf8d75e.png)
(2)异面直线
与
所成角的余弦值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)当点
在棱
上运动时,
最小值为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2975673707df80dd358c4ac9d61aea6c.png)
(4)
是平面
上一动点,若
到直线
与
的距离相等,则
的轨迹为抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b96fac11d72f72c805dbddb8da72d68.png)
![](https://img.xkw.com/dksih/QBM/2022/5/5/2973002548953088/2974277540159488/STEM/794438566e3540bdbd8aef4c6678ff13.png?resizew=167)
(1)三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38593653bedb845ecfa820806a29a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63dfa1a457921f589e7d27fffbf8d75e.png)
(2)异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee50ecf6f0134a6efc2ca6f6d70cd134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2975673707df80dd358c4ac9d61aea6c.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐1】以下四个关于圆锥曲线的命题中:
①设A、B为两个定点,
为非零常数,
,则动点P的轨迹为双曲线;
②平面内到两定点距离之和等于常数的点的轨迹是椭圆
③若方程
表示焦点在x轴上的椭圆,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a30d1ca1489fb48d1f5a43c004c926.png)
④双曲线
与椭圆
有相同的焦点.
其中真命题的序号为________________ (写出所有真命题的序号).
①设A、B为两个定点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7a3544be6797ded92aa786853fec8d.png)
②平面内到两定点距离之和等于常数的点的轨迹是椭圆
③若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3d4ce1e61016c6b971f79d85ef9586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a30d1ca1489fb48d1f5a43c004c926.png)
④双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d49e09b17b19d7c787e95bcf1e9731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b1ddc7d49161e0eb8cecdab16285d4.png)
其中真命题的序号为
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
【推荐2】如图所示,“嫦娥一号”探月卫星沿地月转移轨道飞向月球,在月球附近一点
变轨进入以月球球心F为一个焦点的椭圆轨道Ⅰ绕月飞行,之后卫星在
点第二次变轨进入仍以F为一个焦点的椭圆轨道Ⅱ绕月飞行,最终卫星在
点第三次变轨进入以F为圆心的圆形轨道Ⅲ绕月飞行.若用
和
分别表示椭圆轨道Ⅰ和Ⅱ的焦距,用
和
分别表示椭圆轨道Ⅰ和Ⅱ的长轴的长,给出下列式子:①
; ②
; ③
; ④
.其中正确的式子序号是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8ef3f4a8e843a79c3b03adeb61adab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85963eb36e1406ca2dfd1d039fbeaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c39835887158fcba559fdfe35ebb5c63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b2667a6c91b720ca9b42d092c776cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cd5e8a611849b4474ec09ceea7e8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8eb7880835a50b6c17e21f4f1cfefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29ebbeee654142a592eb0f7d79c3ad83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4265894a8ecb24e6876b72eefcb8c1d1.png)
![](https://img.xkw.com/dksih/QBM/2015/7/2/1572161977655296/1572161983348736/STEM/2ca0281d1bfb43348c3b59ec8ea9ab81.png?resizew=98)
您最近一年使用:0次