解题方法
1 . 已知
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8db11bffa3098c66cc6d1f5c1c5eff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe87d1d6d24df49d84b01eebd4e0de07.png)
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2 . 以正四棱锥的侧棱与底面所成角的正弦值为自变量
,则相邻两侧面所成角的正弦值与
的关系是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
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解题方法
3 .
,
,
,实数
满足
与
的夹角为钝角,则
的取值范围为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e405db6c09d6ab5739cabbb63cd3b3bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb2c92cae8c38f98dfdf12c9663d94b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9441846da0868582298cece138bec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b625b8d3178dd0ea451a80a63082c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解题方法
4 . 已知函数
的最大值为
,最小值为
,则
与
满足( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac16d0bee57add2ff49c20a0d1aa8445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 设
是单位向量,
,则四边形
是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c984376f5475184e0d3e4f7e1bb65f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1aef4c06a9b56641473587a88c354c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.梯形 | B.无特殊限制的菱形 | C.正方形 | D.无特殊限制的矩形 |
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6 . 函数
的单调增区间为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c873e8403ea9bcf861cfa2c8d89793e.png)
A.![]() | B.![]() |
C.![]() | D.不存在 |
您最近一年使用:0次
7 . 已知集合
,若
在
时是单调函数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d402e9909b56a46bd26483007efd4773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d2ae2b60bbf92a87ece8ed78ec9f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
8 . 线段
上的一点
,直线
外一点
,满足
,
,
,
为
上一点,且
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce2f190a7e32e78446ac91fd3d9dd8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffffa778e9b14dc8801b229600eee6ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/486793b14bc4da7128ce5024884ee675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c6b19b7e3d0a11f486bd422596e871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e73c131a7f929060e83d5a80d4ab5e6.png)
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9 . 如图,四边形
是平行四边形,
,
,
,动直线
由
轴起向右平移,分别交
两边于不同两点
、
.
和点
的坐标,写出用
表示
的面积
的函数解析式
;
(2)当
为何值时,
有最大值?并求出此时的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab158dd9e96abcae0f115f54fa66c5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23aec8c7c837d9734958bde5fea94a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9488d4fb791e9274b2867a97319b50b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c00e0ca93b81029af5c4cd3bbd0314ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72d58b0fe0c727559b221753e676f14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b096e36a68bb4f953f4f2d507af022.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b096e36a68bb4f953f4f2d507af022.png)
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10 . 若
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f75810ff95344f9de4a3bca9d9a6fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab46e06bfa4bd3adabcd0f73fb1e268.png)
您最近一年使用:0次