1 . 如果实数
满足:
,则目标函数
的最大值为________ .
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573022152835072/1573022158970880/STEM/ca9e628a09284aa58ae1109ebcf872c5.png?resizew=28)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573022152835072/1573022158970880/STEM/fa7ee43c4ca64b2db2ba4d742bffeffc.png?resizew=93)
![](https://img.xkw.com/dksih/QBM/2016/9/14/1573022152835072/1573022158970880/STEM/cb54735dc1064bc09eceab108d60833b.png?resizew=70)
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2 . 已知数列
满足
,若从
中提取一个公比为
的等比数列
,其中
且
,则满足条件的最小
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb3840a1f33b5b3175979234e1db45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec07a126ada2c921c5b4337f77854cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3622a550fb274ca81cbd2851c9245c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388063fd85901a930864ff0454efdabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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3 . 已知O是坐标原点,点A(-1,1)若点M(x,y)为平面区域,
上的一个动点,则
的取值范围是_____ .
![](https://img.xkw.com/dksih/QBM/2016/9/5/1572996731781120/1572996737662976/STEM/f8c93ae9485344a4b2ff08e687443a3b.png?resizew=68)
![](https://img.xkw.com/dksih/QBM/2016/9/5/1572996731781120/1572996737662976/STEM/524d7eea371c4c15a89005efc13a87c8.png?resizew=64)
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4 . 《九章算术》中“两鼠穿墙题”是我国数学的古典名题:“今有恒厚若千尺,两鼠对穿,大鼠日一尺,小鼠也日一尺,大鼠日自倍,小鼠日自半,则
的值为,问何日相逢,各穿几何?”题意是:有两只老鼠从墙的两边打洞穿墙,大老鼠第一天进―尺,以后每天加倍;小老鼠第一天也进―尺,以后每天减半,如果墙足够厚,
为前
天两只老鼠打洞之和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
________ 尺.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
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2016-12-04更新
|
594次组卷
|
6卷引用:2016届广东省深圳市高三第二次调研考试数学(文)试卷
2016届广东省深圳市高三第二次调研考试数学(文)试卷2017届湖南衡阳八中高三10月月考数学(理)试卷2017届宁夏石嘴山市第三中学高三下学期第一次模拟考试数学(理)试卷(已下线)2018年9月20日 《每日一题》人教必修5-等比数列的前n项和(1)(已下线)2019年9月19日《每日一题》必修5—— 等比数列的前n项和(1)宁夏石嘴山市第三中学2017届高考一模数学(理)试题
5 . 设
的内角
的对边分别为
,
,
.若
,
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.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/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f002f960ec07ea229ed243e2d991d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c365da2b0ffc3e6263dcd363e737847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46196aec06c25d5c8f9b1d3a8f50a889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
2016-12-04更新
|
505次组卷
|
2卷引用:2015-2016学年广东省惠州市惠阳高中高二下期中文科数学试卷
6 . 设
的内角
的对边分别为
,
,
.若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.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/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f002f960ec07ea229ed243e2d991d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c365da2b0ffc3e6263dcd363e737847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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2016-12-04更新
|
614次组卷
|
4卷引用:2015-2016学年广东省惠州市惠阳高中高二下期中理科数学试卷
7 . 已知变量
满足约束条件
,则
的最小值为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e482ae9a249567b395e012a58d6ac56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d621f9294f046f7da6b8960b51a89814.png)
您最近一年使用:0次
2016-12-04更新
|
153次组卷
|
3卷引用:2015-2016学年广东省惠州市惠阳高中高二下期中理科数学试卷
8 . 已知实数
满足不等式组
,则
的取值范围是___________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23e347bd749928384fc28852db2bd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec428431f4cf06c0fad9c1798cb430c9.png)
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9 . 已知
的面积为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d11a5a756d8fdd7b294c4f5fd63467b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
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10 . 已知点
的坐标满足条件
,点O为坐标原点,那么|OP|的最大值等于___ .
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572981576130560/1572981581537280/STEM/af507a5f04fc40788e5bf2f1b450180c.png?resizew=51)
![](https://img.xkw.com/dksih/QBM/2016/8/17/1572981576130560/1572981581537280/STEM/53cbeb3cfd034dea95248f2ffd750b48.png?resizew=71)
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