解题方法
1 . 已知直线l的一个方向向量为
,直线l的倾斜角为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44c0d6c279fa4120420ab3040e2336f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5d829c7d4e474c6c1cf92a29d93e38.png)
A.![]() | B.0 | C.![]() | D.2 |
您最近一年使用:0次
解题方法
2 . 在三棱锥
中,
⊥底面
,
,
,
,则三棱锥
外接球的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1371fe98a65d8ebd840c8d98346b6d15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8825d400f453c5c17a7beeb1cc9a9cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知函数
的图象关于直线
对称,其中
,则
在
上的极值点有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a757bf3b86b6a3a351bc45645a32d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9895bf4192f5c55c16f8270d53c49b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc4b94b5490f89ed4355302b3d14c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84ce07dcbbcf8e4b7f246649fb3f835.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 如图,棱长为1的正四面体
中,
为棱
的中点,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/8ad6174a-0fe2-4364-afbd-a8d7daa85d79.png?resizew=152)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0173d70c0593f0b2c451f42eb373f211.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/8ad6174a-0fe2-4364-afbd-a8d7daa85d79.png?resizew=152)
A.![]() | B.![]() | C.0 | D.![]() |
您最近一年使用:0次
解题方法
5 . 若函数
在
处的切线的倾斜角为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdc1ef0ac6daa057fce892747346989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95a2ec02caf837c6e7e0b76dd9acc7f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e948bbf56f2859a1267f9cc69929cdfe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
6 . 在数学解题中,常会碰到形如“
”的结构,这时可类比正切的差角公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d84cc212fe11c531d315f372968b43a.png)
.如:设
是非零实数,且满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb249682d7ea4b3534ac17d6400e3f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d84cc212fe11c531d315f372968b43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f16c318c946157304969e6233842ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e1c8afbbc2dc21a32b4f446c3d079b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b9afe6e2307c6a8b0097a6c45b227c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 如图,棱长为1的正方体
中,
为线段
上的动点(不含端点),则下列结论错误的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/a4bbb988-5cf1-4336-8772-476019a94b5b.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/a4bbb988-5cf1-4336-8772-476019a94b5b.png?resizew=166)
A.平面![]() ![]() | B.![]() |
C.三棱锥![]() | D.![]() ![]() |
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2020-04-25更新
|
166次组卷
|
2卷引用:安徽省黄山市“八校联盟”2019-2020学年高二上学期期中数学试题
名校
8 . 函数
为
上的可导函数,其导函数为
,且
,在
中,
,则
的形状为
![](https://img.xkw.com/dksih/QBM/2019/4/26/2190630421446656/2190986041360384/STEM/2146c52102154b6297df8080e783c095.png?resizew=4)
![](https://img.xkw.com/dksih/QBM/2019/4/26/2190630421446656/2190986041360384/STEM/adfcb86671994c3ab927d2dcee3d2b6e.png?resizew=18)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba7085e9e06b486a46021314a6120eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f667570f4443a9f15525910e91ad966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/2019/4/26/2190630421446656/2190986041360384/STEM/c8636ebbbeb241979c1e0cb44201125c.png?resizew=4)
![](https://img.xkw.com/dksih/QBM/2019/4/26/2190630421446656/2190986041360384/STEM/2146c52102154b6297df8080e783c095.png?resizew=4)
A.等腰锐角三角形 | B.直角三角形 | C.等边三角形 | D.等腰钝角三角形 |
您最近一年使用:0次
2019-03-04更新
|
1050次组卷
|
6卷引用:【全国百强校】安徽省黄山市屯溪第一中学2018-2019学年高二下学期期中考试数学(理)试题
名校
解题方法
9 . 在
中,内角
所对的边分别为
,已知
,
.则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a4e6d6609ecb845e67a3e06a88b18a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db0afb2930332299697f14dc939119e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 若函数
在
上单调递增,则
的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3d9d2dc7ffaeced45656c53753c622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa257f460e4ac09d2c68954d5c824d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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