1 . 已知三棱锥
中,
,
,点
是
的中点,点
在平面
射影恰好为
的中点,则该三棱锥外接球的表面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ddc3178cc8ac2e034fe3b1723b4bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43996f3e9cc8e5cf039de260e21ccbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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2 . 已知点
是
的内心,
,
,则
面积的最大值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7502eee6f33e8c940dec63ab6473c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4962343ca7d065aee473dbf79eb8d3c5.png)
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3 . 已知
若方程
有且仅有3个实数解,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702b76e5b0d0986b9ea8155fbde53540.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f2a02f6b86b50b2966a7841f7b602c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2017-10-10更新
|
507次组卷
|
2卷引用:山西省河津三中2018届高三一轮复习阶段性测评文数试题
名校
4 . 已知函数
,若有
,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e179eb520f2ee0be4c411a3ffb8e655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7d7884bcfde992e65f3b974b867748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2017-12-14更新
|
1370次组卷
|
7卷引用:山西省康杰中学2017-2018学年高一上学期期中考试数学试题
名校
5 . 函数
的单调减区间为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7122d9bd65bd4b193e7c2808b61d4ab0.png)
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2017-12-12更新
|
881次组卷
|
3卷引用:山西省运城市夏县中学2018届高三上学期第一次月考数学(文)试题
名校
6 . 设
为数列
的前
项和,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4c5f2eabcfbcb67eeec6e4ca96fa58.png)
_ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e856be82991b12503a77adc3c43eab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3591a6fa3bbc87b646967ff838369d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4c5f2eabcfbcb67eeec6e4ca96fa58.png)
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2017-12-07更新
|
745次组卷
|
5卷引用:山西省榆社中学2018届高三11月月考数学(文)试题
7 . 如图,在四棱锥
中,
底面
,
,底面
为矩形,
为线段
的中点,
,
,
,
与底面
所成角为
,则四棱锥
与三棱锥
的公共部分的体积为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f09ad78d4eccd1a9c9ccd3c4af79c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ea8a12e5f64b7f0694744fd455e235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b58b9ecc79dde008ca42af27e644b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9b11f2ea112fff1885811bd5bc73cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4e569b55678b8b54bf23e3a680b0ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/25/0ce3ac3f-3efc-40ca-a298-8cf3d84e8358.png?resizew=180)
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2017-12-06更新
|
907次组卷
|
3卷引用:山西省榆社中学2018届高三11月月考数学(理)试题
名校
8 . 数列
的递推公式为
(
),可以求得这个数列中的每一项都是奇数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3b8b5e68c8b08d33eaa0135227bdd6.png)
__________ ;研究发现,该数列中的奇数都会重复出现,那么第8个3是该数列的第________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94a8bbf01428b6c2752c839d864e575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb3b8b5e68c8b08d33eaa0135227bdd6.png)
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2017-12-06更新
|
764次组卷
|
2卷引用:山西省芮城中学2018届高三上学期期中考试数学(理)试卷
名校
9 . 某品牌手机销售商今年1,2,3月份的销售量分别是1万部,1.2万部,1.3万部,为估计以后每个月的销售量,以这三个月的销售为依据,用一个函数模拟该品牌手机的销售量
(单位:万部)与月份
之间的关系,现从二次函数
或函数
中选用一个效果好的函数行模拟,如果4月份的销售量为1.37万件,则5月份的销售量为__________ 万件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966fe61433e247b0a76f77659dc45d56.png)
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2017-11-28更新
|
903次组卷
|
4卷引用:山西省太原市2017-2018学年高一上学期第一次测评(期中)数学试题
山西省太原市2017-2018学年高一上学期第一次测评(期中)数学试题山西省太原市第十二中学2017-2018学年高一上学期期中考试数学试题(已下线)第01讲 线性回归分析-【帮课堂】2021-2022学年高二数学同步精品讲义(苏教版2019选择性必修第二册)4.5.3 函数模型的应用练习
10 . 若曲线
与直线
恒有公共点,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7776f8179bc04afd0574c9019945e922.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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