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1 . 某盒中有12个大小相同的球,分别标号为
,从盒中任取3个球,记
为取出的3个球的标号之和被3除的余数,则随机变量
的期望为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63aca6ebf2945c736087cd95c54b683c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
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2 . 函数
(e为自然对数的底数)与
的图象上存在关于x轴对称的点,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b03d3629dc571cb020056d5be29cc12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66013d10fce508e7ec5caec608ad2ac9.png)
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3 . 已知棱长为8的正四面体,沿着四个顶点的方向各切下一个棱长为2的小正四面体(如图),则剩余中间部分八面体的外接球的表面积为______ .
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解题方法
4 . 已知
,若存在
,使得
成立,则实数
的取值范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab569bb2ce49f69984f0576d09f9556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a733c45def518ffdb84b1a3c8bc508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6700237e42df2f85392e4244ba0302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-04-29更新
|
432次组卷
|
2卷引用:四川省广安市华蓥中学2023-2024学年高二下学期4月月考数学试题
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5 . 如图所示,已知
满足
,
为
所在平面内一点.定义点集
.若存在点
,使得对任意
,满足
恒成立,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd7d62e4e7ca6c1fd339b93802290a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dae0f962cd9495586b18b4b3e6ecaf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29c9c38e00576ac05e54a60f20a1833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d54f4f7b089e07d1271545c72cfb21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e5d2cafcddbfc773665668a32fa3f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72adb4fd5bd24d7445bdd2a6c669c5f5.png)
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2024-04-23更新
|
826次组卷
|
5卷引用:四川省成都市第七中学2024届高三下学期5月考试理科数学试卷
四川省成都市第七中学2024届高三下学期5月考试理科数学试卷上海市徐汇区2024届高三学习能力诊断数学试卷(已下线)压轴题06向量、复数压轴题16题型汇总-1(已下线)压轴题07三角函数与正余弦定理压轴题9题型汇总-1(已下线)【练】 专题一 平面向量线性运算的最值问题(压轴大全)
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解题方法
6 . 已知函数
,函数
有两个极值点
.若
,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1e568e2b908fd5c2cad7334a1332cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585de67a3fc494297d375d339af6d153.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c5fd4dea8836f8fb24023585d2e6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a306d6cd5034071906f72e3fbeb907.png)
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2024-04-16更新
|
434次组卷
|
3卷引用:四川省南充市嘉陵第一中学2023-2024学年高二下学期第三次月考(5月)数学试题
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解题方法
7 . 已知边长为2的菱形
中,点
为
上一动点,点
满足
,
,则
的最大值为 _________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fb9a0ea0b6d0545022dad953602389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/139f855d2a3392b330a2aeece8dcf32a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4800094a6c5023668c9c9a826a0f6f17.png)
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8 . 函数
与其导函数为
,满足
,其中
;若
,
,其中
.
①
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e49359c5c9d119d81b08e8ca91c404.png)
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa79527e9b1cc3839131d98ca2c46ee.png)
其中正确的命题有______ .(将正确的序号都写上,多写漏写均不得分)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1532cefdaf4b6df045285000b288b6d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad0fbc31815c67dc97072bfbcfe7fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa3e99070c9d83a1b4620d151a0c945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee86fc3cc1700452e83ca45bccb9c55.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6800a8cc57f3655f62ca47f7846b8a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e49359c5c9d119d81b08e8ca91c404.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad4406d78858a1c6c5d9b37726e30ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aa79527e9b1cc3839131d98ca2c46ee.png)
其中正确的命题有
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解题方法
9 . 倾斜角为锐角
的直线过抛物线
的焦点,与抛物线交于
、
两点,线段
的垂直平分线与
轴交于点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6e6ee5ffa5a1a447e630b0d092ee4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6e6ee5ffa5a1a447e630b0d092ee4.png)
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10 . 已知关于
的不等式:
的解集为
,则
的最大值是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ab5a4673bd2d39ec743fa2ed93ce6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e2dd7a988cc80530e739c22b2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e5c23c9d28b7fb4d95af6f1bb12dba.png)
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