1 . 在等差数列
中,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c09e0267b2b765b8901bf089cbd4658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0382b4a2ab0657d2d6830bb6be2b17b6.png)
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2 . 在
中,
则
=____________ .
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977555968/STEM/df1b26b0765f4f1b9c06b9dd64dfd853.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977555968/STEM/39dae239e76c45429f9dfcf9ec12a804.png?resizew=145)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977555968/STEM/e0a2cdf443f0467dbdc5bad95516d1b0.png?resizew=37)
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3 . 函数
的最小值为____________ .
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977539584/STEM/8d948d85964a44d089fdf2681723cc20.png?resizew=111)
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4 . 已知数列
的通项公式为
则![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977498624/STEM/2228e46d13464653b99f00a881cff852.png?resizew=33)
____________ .
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977498624/STEM/1b872e57736e4e02b131b44ba46c65e8.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977498624/STEM/7726c89becb6458d806c63e76d648cbb.png?resizew=87)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939971715072/1572939977498624/STEM/2228e46d13464653b99f00a881cff852.png?resizew=33)
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12-13高二上·云南大理·阶段练习
真题
5 . 在△ABC中,AB=1, BC=2, B=60°,则AC=_____ .
您最近一年使用:0次
2016-12-02更新
|
1677次组卷
|
6卷引用:2015-2016学年江苏省宿迁市沐阳县高一下学期期中数学试卷