名校
解题方法
1 . 从5名男生和4名女生中选出4人去参加一项创新大赛,如果4人中必须既有男生又有女生,有 1 种选法.
您最近一年使用:0次
2 . 中国南北朝时期数学家、天文学家祖冲之、祖暅父子总结了魏晋时期著名数学家刘徽的有关工作.提出“幂势既同,则积不容异”“幂”是截面积,“势”是几何体的高,详细点说就是,界于两个平行平面之间的两个几何体,被任一平行于这两个平面的平面所截,如果两个截面的面积相等,则这两个几何体的体积相等,上述原理在中国被称为祖暅原理.一个上底面边长为2,下底面边长为4,高为
的正六棱台与一个不规则几何体满足“幂势既同”,则该不规则几何体的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
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3 . 已知
,集合
.则集合
中所有元素之和为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca72a26db57090bba9eb901e694195bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37013abe2917d3a92d070885a0c215f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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4 . 有7把相同的椅子排成一排,要求3个人坐下且不相邻,共__________ 种坐法.
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5 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8ee93f7771f73f0303642db5783b21.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1854fd8bf76e74f6414fc8c9a77a0216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8ee93f7771f73f0303642db5783b21.png)
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6 . 已知变量
与
的10对观测数据为
,且
,
,若
关于
的经验回归方程为
,则变量
的平均值![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24acc59e9b9aefe624f00d094e300b52.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051c7adfe65a08d58dddd7443f38a274.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/2a0d7f2407d2675876ad46a6a3d7cfb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a38fceccda751f72ee84e01586e41a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f632c467ab718f1acaf9429418522f60.png)
![](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/db94c8cc7d69e37a95aee6501682c220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24acc59e9b9aefe624f00d094e300b52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051c7adfe65a08d58dddd7443f38a274.png)
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解题方法
7 . 已知等差数列
的公差
,首项
,
是
与
的等比中项,记
为数列
的前
项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc625e19e7ca2b9d097f67a3d472e47.png)
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名校
解题方法
8 .
内角
,
,
的对边分别为
,
,
,若
,
,则
的面积为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e182f183fc39883cf30bd91a7858fa87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09d3176074ac8b37cccdea181f1dffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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7日内更新
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236次组卷
|
2卷引用:山东师范大学附属中学2024届高三下学期考前适应性测试数学试题
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解题方法
9 . 已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc45f0a904c514cee48cab0e9692952.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb0341a980046d3a250cafaf834bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c5335c5ae28f4ac92ddd7f5ce6c7d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660257c0f8abac7503515d47b7f65fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc45f0a904c514cee48cab0e9692952.png)
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7日内更新
|
254次组卷
|
2卷引用:山东省烟台市牟平区第一中学2023-2024学年高二下学期6月限时练(月考)数学试题
名校
10 . 若
,且
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fac3162e61b6491fb232fa0820c567d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11fbf630427da7e2520a3318e9483a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4c11c0cb3ea1d7075bb1d80c11f895.png)
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|
411次组卷
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2卷引用:山东省聊城第三中学等校2023-2024学年高二下学期5月质量监测联合调考数学试题