1 . 设
是实数,已知
,若
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/649d94efdc6bd034052b676c5923e162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa49dbaa99a0d7a7a6d18b3fe42091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.3 | D.6 |
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2 . 记
为等差数列
的前
项和,且
,
.
(1)求
的通项公式;
(2)若
,求数列
的前
项和
.
![](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/db2c97f55d9ffac66e05017b38c05b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c8a216cb77be3c3c3766b10c727a3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6c42aac64264484f9b0023935b4f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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3 . 已知数列
满足
,
,则数列
的前9项和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec499e8ee1735a250346620c50f588a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
A.6 | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
7日内更新
|
29次组卷
|
2卷引用:安徽省亳州市涡阳县2023-2024学年高二下学期5月期中考试数学试题
解题方法
4 . 在等差数列
中,
,
,则数列
的公差d( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259b2e755105c0ee479eabf7265a76a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa89e137a7d3e7e54acbec908da5f989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
A.1 | B.2 | C.3 | D.4 |
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5 . 设
是一个离散型随机变量,其分布列为:
则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
0 | 1 | ||
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/019833b18a2c5d7e0815965e50071b08.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 下列随机变量不是离散型随机变量的是( )
A.连续不断地射击,首次击中目标所需要的射击次数X |
B.南京长江大桥一天经过的车辆数X |
C.某种水管的外径与内径之差X |
D.连续抛掷两个质地均匀的骰子,所得点数之和X |
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7 . 某物体的运动路程s(单位:m)与时间t(单位:s)的关系可用函数
表示,则该物体在
时的瞬时速度为______ m/s.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930e83324f2039d4d4d57ec0a4de6550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a585d18cafc764ef0dc144feedce19.png)
您最近一年使用:0次
解题方法
8 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5a543ff163fc1fbb0ba37b26f10752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74be0e395883f9cb867b4ab11e21080.png)
A.1 | B.![]() | C.![]() | D.![]() |
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名校
9 . 样本数据
的第30百分位数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ea59ba9c066b71f4f11b55441360ee.png)
A.7 | B.7.5 | C.8 | D.8.5 |
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解题方法
10 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d4d1630360feba06138ffdd92b3efd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecae966ab803d56b068ab2b97b913c57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d4d1630360feba06138ffdd92b3efd.png)
您最近一年使用:0次