1 . 函数
,
的单调减区间为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d46ac9cc39070998d27c8611be305d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
您最近一年使用:0次
2017-02-08更新
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364次组卷
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3卷引用:2015-2016学年江苏连云港东海县房山高级中学高二下期中文数学试卷
2 . 数列
满足
,则数列
的通项公式是_____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618355712/STEM/7bc5a009cd994df6aeba0bcaa5a3b1b4.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618355712/STEM/9747e4c794704747a60464bf3cf47fd9.png?resizew=201)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618355712/STEM/7bc5a009cd994df6aeba0bcaa5a3b1b4.png?resizew=29)
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3 . 已知在数列
中,
,则
等于______ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618093568/STEM/24cb949342e5429f80d1c621ac896a7c.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618093568/STEM/2fbdc04366c14d0e9d9dd07ebea93d72.png?resizew=139)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618093568/STEM/da0a17f88ad54b48bb349e83b529b473.png?resizew=17)
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4 . 若角
是锐角,则
的最小值是_____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618331136/STEM/289c0e7888d84ba7afb636c50c7f57be.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618331136/STEM/0ae0e061205a4e0c806b9a85f1468729.png?resizew=169)
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5 . 关于
的不等式
的解集是
,则
的取值范围是______ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618290176/STEM/d9c7fad653cb4400b0bc625267ff3431.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618290176/STEM/beb8a0a513eb4277b9851140ef96bd76.png?resizew=103)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618290176/STEM/8e027a21437b4f33ba1f8b05c32cc063.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618290176/STEM/800a422672d342828f4e71ac1ab0bea7.png?resizew=13)
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6 . 在等差数列
中,首项
,公差
,若
,则![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618241024/STEM/365db13fd5aa4e72923c497b4ca350b6.png?resizew=25)
_____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618241024/STEM/cdf30be90d9748fd9121abffa3b09563.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618241024/STEM/26f1633a4c3749d789fc64512ddc54c8.png?resizew=41)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618241024/STEM/6c0b18cb7b4c499b8936af116a9a0a82.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618241024/STEM/caa40f96a2ad4677b9186ca7f46953ce.png?resizew=136)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618241024/STEM/365db13fd5aa4e72923c497b4ca350b6.png?resizew=25)
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7 . 若等差数列
的第
项恰好为等比数列
的第
项,则数列
的公比是____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618183680/STEM/e2c1f51adb94447ab716c8c387770a5b.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618183680/STEM/16a661c873ce4304bfe52f11dc401847.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618183680/STEM/3572282117584fd38172c1c07bf33f22.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618183680/STEM/13db38c21a5b403d9b7b1f7fa89cd564.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618183680/STEM/3572282117584fd38172c1c07bf33f22.png?resizew=28)
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8 . 若一个直角三角形的三边长恰好组成一个公差为
的等差数列,则该三角形的面积是____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618159104/STEM/39496c1babec422a9de6463eaad1a1c2.png?resizew=13)
您最近一年使用:0次
9 . 已知关于
的不等式
在
上恒成立,则实数
的最小值为____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618306560/STEM/3023be4467644b3bb67cba180d2aa954.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618306560/STEM/c3817493886247e59e20f560bc30164d.png?resizew=93)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618306560/STEM/ec0eeb652aa944bdac888787d0f7f4b5.png?resizew=72)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618306560/STEM/19ed8820a1fc4118a9df7e02c87850e7.png?resizew=13)
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10 . 设
,如
.对于正整数
,当![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/5dc41f5e0ad5418c86b469cfce1c8d48.png?resizew=79)
时,设
,
,则![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/6654c61d6f14403da4195f9d96444717.png?resizew=59)
_____ .
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/58223dc5b35a45a1bfd66a970ef5bb7e.png?resizew=205)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/4ed0d22b5bcf4b4e9ed2a0f6558b6e0e.png?resizew=137)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/69d2b4fb73e04293a77f112c507c8f6d.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/5dc41f5e0ad5418c86b469cfce1c8d48.png?resizew=79)
时,设
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/a946add42786439bb63c31cc3d42db52.png?resizew=268)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/bc0b053551c84dae9cedc94063cfa2e4.png?resizew=157)
![](https://img.xkw.com/dksih/QBM/2016/11/14/1573146612416512/1573146618380288/STEM/6654c61d6f14403da4195f9d96444717.png?resizew=59)
您最近一年使用:0次