名校
1 . 已知
的展开式中二项式系数最大的项只有第8项,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac13369db3a6cd9c7f4b923e334d0c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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解题方法
2 . 已知
,已知展开式中的奇数项的二项式系数和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796636ed74353465653f3aaa93c36f5a.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366d1f29571fa8463e728ba19b1cf068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46697de8a6957e57623deb40ac659df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/796636ed74353465653f3aaa93c36f5a.png)
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解题方法
3 . (1)求
的二项展开式中的常数项
(2)求
的二项展开式中系数最大的项(结果保留通项形式)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c0893e2d88925bb5eee57274c1e033.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04f3a490511817368ed90425db7711f.png)
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4 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b6d11e7ce1ac07bef0e9e83c6ba9ab.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b6d11e7ce1ac07bef0e9e83c6ba9ab.png)
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5 . 已知数列
的通项公式为
.
(1)分别求
的二项展开式中的二项式系数之和与系数之和;
(2)求
的二项展开式中的系数最大的项;
(3)记
,求集合
的元素个数(写出具体的表达式).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3e89305076f56504692224c6c25c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f8953856b89da074a14618bc8bb98b.png)
(1)分别求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd86c94270602eb731ff78f9ffbb940.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014ceeaa474cc53fc5e5ae6f887ec876.png)
(3)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f0f6b1505ade20c1a0c63d40fa5d29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23583bb045f087b36e7491c379869188.png)
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6 . 设
,若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc009e82148c32647621725edf12b44.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fd864fb00fbabea34c44ce44895fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553a2b13547ab9fabd8878fbbb8780db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8e7a2df4185211339d84892de2ddf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc009e82148c32647621725edf12b44.png)
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2024-04-20更新
|
795次组卷
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4卷引用:上海市普陀区2024届高三下学期4月质量调研(二模)数学试卷
解题方法
7 . 计算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375672a5135e75e4783ad9628165b3aa.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375672a5135e75e4783ad9628165b3aa.png)
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8 . 设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6c737720590e5fe5c99b0f4f1c7c22.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c243b33b1dff0484ceb03e0ad50c4b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6c737720590e5fe5c99b0f4f1c7c22.png)
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9 . 在
的展开式中,
项的系数为__________ .(结果用数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896b184fa017c9adf5fb81faf740715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
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2024-02-29更新
|
543次组卷
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2卷引用:上海市奉贤区奉贤中学2024届高三下学期开学考试数学试题
名校
解题方法
10 . 把
称为
的二项展开式所有项的二项式系数之和,其中
是正整数.
(1)若
的所有项的二项式系数的和为
,求
展开式的常数项;
(2)若
展开式中第
项系数为
,求
的展开式中
的系数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc232388e0c3863b0ba2b68e894a51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9216a0f9d6e65ea4937ab7bf102c5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9c52f2a19cafd314ed6be4fb380301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/332e71982612ea86c28b9f2054b1045c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9c52f2a19cafd314ed6be4fb380301.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9c52f2a19cafd314ed6be4fb380301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e35f76e01c3979ae5987f7729f9856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996f9075861957671e8bed7e63aa6529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
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2024-01-30更新
|
494次组卷
|
3卷引用:上海市华东师范大学附属东昌中学2023-2024学年高二上学期期末考试数学试卷