在空间四边形ABCD中,
,
,
,
.若
,则
的面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd6a2b112facda441f4e34bf5c145fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c985b2a5d41205c53ab4077537c2feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9536a2be7b84612f45cc875a00c5a5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
2018高三·全国·竞赛 查看更多[1]
更新时间:2018-12-26 17:47:59
|
相似题推荐
填空题-单空题
|
适中
(0.65)
【推荐1】已知数列
满足
,
.若数列
构成的集合为有限集,则
、
应满足______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377221b80387b8e290b371762f27a496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8c4cccf2add30adbd44f6cff0c619c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad481cbfb67ac9cdbc0537f3de23b022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13a607ac0c7f76d252d7cb1bb040fd.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】已知圆
围成的封闭区域内(含边界)的整点(坐标均为整数的点)数是椭圆
围成的封闭区域内(含边界)整点数的
,则正实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd89a03660c85fb78bd7fe82ee3068c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f2f1bc9679a4facbfe9e38619d0166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐1】在正方体
中,过
、
、
三点的平面记为
,过
、
、
三点的平面记为
.那么,
为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bd547a62e113e0f44ccd06859a201f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f471ed43d45dbe944c42024a1ceb7872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b8180db0598bd57fc4476bca79726b.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】三棱锥S-ABC中有四条棱长为
,另外两条棱长为
和2.则较长的两条棱所成的夹角为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
您最近一年使用:0次