名校
解题方法
1 . 已知
为两个不同的平面,
为两条不同的直线,下列说法正确的是______ .
①
,
,
②
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f1b7081da6d7ef0998eccb9cd36b1d.png)
③
,
,
④
,
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d6a7aec04e1d5768ef830b534460a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0136ff034377d0109923e845dbd27dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f1b7081da6d7ef0998eccb9cd36b1d.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542a1572078188c8fbe82ebddf8af3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d2a947e3fdc214d40a7d3f54679a73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb82a0d764e8301607285c7cdaefd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/675f1e09eb033dab8ef96d1f1c349150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a557a5746706ff11213e3c33add965ef.png)
您最近一年使用:0次
2 . 在
中,
为
边上一点.若
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c7fbc402bbd3f930f9eada7dab466.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e29b822cda1ba926e96368094fa1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d4eea2b5e11dfe32542187de16af12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738c7fbc402bbd3f930f9eada7dab466.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,内角
所对的边分别为
,满足
,
是边
的中点,
,且
,则
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5458cf682081953c2d6ecdb13ca67291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a80d642494e68c4bd5219a7c67ffe5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb75557d217f59ef1f33e8da1ac0d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47f2b6e8510964c9df2cc058891eb07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f3107cdd4180a3b37b8a22d8ececbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2024-06-13更新
|
154次组卷
|
2卷引用:吉林省长春外国语学校2023-2024学年高一下学期5月期中考试数学试题
名校
解题方法
4 . 如图,在平面斜坐标系
中,
,平面上任一点
的斜坐标定义为:若
(
为与
轴、
轴同方向单位向量),则点
的斜坐标为
.若在该斜坐标系中,
,
,则
为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6091495f40b421fde1b167814e6674d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d9aa1d34d66a6876aa0566c8fc8b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5685e364dec31be0e5d6973e5b56efcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d23dbda2563059789698f0219387900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f22de2383a103b4481e8b4669caddc4.png)
您最近一年使用:0次
名校
解题方法
5 . 数列
定义如下:
,且当
时,
,已知
,则正整数n的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e46c7d7f19e894499faf72e521a35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b1d0936c50b18453e28ee6a9536299.png)
您最近一年使用:0次
2024-06-08更新
|
184次组卷
|
2卷引用:吉林省长春市东北师范大学附属中学2023-2024学年高二下学期期中考试数学试卷
名校
6 . 已知在正方体
中,P为
中点,
,若平面
绕
旋转,则
与在平面
所成角的余弦值最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca1220cac88301a48ee05139cf1b1d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
7 . 若一个三位数的各位数字之和为10,则称这个三位数为“十全十美数”,如
都是“十全十美数”,则一共有__________ 个“十全十美数”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea863c21e5fc1ed763c94498dab68f44.png)
您最近一年使用:0次
名校
解题方法
8 . 若不等式
恒成立,则
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd827d347c7559821f47e677b384e595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
您最近一年使用:0次
9 . 若
,
,且
为纯虚数,则
在复平面内对应的点位于第______ 象限,实数
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80d6b34d49a8fe96637a7429fc883ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03f9b805c034ffdc542b03e5fa7ac9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4bd86abf556fccaec6c5a0999a0acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
10 . 已知△ABC的内角A,B,C的对边分别为a,b,c,△ABC中BC边上的高
,
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2831066c922fb479fc9a76c4ae7c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb27c215aea3e767524330cde7eff03.png)
您最近一年使用:0次