1 . 下列结论中: ①函数
有最大值为
; ②函数
(
)有最大值
; ③若
,则
.正确的序号为________
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/cf646c2a0e7a4cf0ab32e7a9cade3a60.png?resizew=159)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/364bc7dce63446fcba26ff8ec2db82c4.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/ab4cd1ae26c04b41a8ac52672d7497f3.png?resizew=96)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/584ee0780d8a401ba0b30f955d7cbfa0.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/399c9baee02b4a6493d5921e91410892.png?resizew=56)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/3aab637b42df4f14a26fa3dfa63a8b29.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167432192/STEM/3d97a088ff9a4e4eafd5d273d25b49bf.png?resizew=112)
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2 . 若不等式
的解集为
,则![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167391232/STEM/d1bdbd5c3a82462c860b2873f13830e9.png?resizew=27)
_______
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167391232/STEM/960d02cfe3234b2aa9932a37cbda0c43.png?resizew=96)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4573b66a2dbd65dd7eb02c5912eddce8.png)
![](https://img.xkw.com/dksih/QBM/2016/5/11/1572632161345536/1572632167391232/STEM/d1bdbd5c3a82462c860b2873f13830e9.png?resizew=27)
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2016-12-04更新
|
623次组卷
|
2卷引用:2015-2016学年广东省惠来一中、揭东一中高二上期末文科数学试卷
3 . 设二次函数
的值域为
,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddf206356b524cd4fa473881fb987d96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471ea695f15ed92d2f60582dc612db78.png)
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4 . 设
满足约束条件
,则
的最大值是________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089ff5fde4d72caf7ffa2a7a579ca855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6dfad5c144afe8b9e18f998f3a0dd6.png)
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名校
5 . 在
中,角
所对的边分别是
,
是
的中点,
,
,
面积的最大值为_____ .
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f9bba0e729202b7b71c72b5f2ae958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da96048f442b01d97c435bf33312e3d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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2016-12-04更新
|
525次组卷
|
2卷引用:2016届广东省佛山市高三上期末理科数学试卷
6 . 若数列{an}成等比数列,其公比为2,则
=____ .
![](https://img.xkw.com/dksih/QBM/2016/4/15/1572594816622592/1572594822193152/STEM/f086e0c1a06c4c3f9f2bda722017ab18.png?resizew=57)
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7 . 已知各项为正的等比数列{an}的前n项和为Sn,S4=30,过点P(n,log2an)和Q(n+2,log2an+1)(n∈N*)的直线的斜率为1,设bn=
,则数列{bn}的前n项和Tn=____________________________________ .
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960847872/STEM/de03cd96ae5b4c87ae74069c982446df.png?resizew=148)
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8 . 已知实数x,y满足
,则Z=y﹣(
)x的取值范围为_________ .
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960831488/STEM/975d0fe7af6a40a3b8e4607d28720769.png?resizew=92)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960831488/STEM/4ae298edecf94e2aa636e76f66e4355f.png?resizew=10)
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9 . 如图在
中,
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572586691633152/1572586697621504/STEM/4963136aa1b744ff8e400308dddd1a6b.png?resizew=308)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
![](https://img.xkw.com/dksih/QBM/2016/4/8/1572586691633152/1572586697621504/STEM/345f364c53754a2fa34d32195dcb8ed1.png?resizew=202)
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10 . 如图,测量河对岸的塔高AB时,选与塔底B在同一水平面内的两个测点C与D,在D点测得塔在北偏东30°方向,然后向正西方向前进10米到达C,测得此时塔在北偏东60°方向.并在点C测得塔顶A的仰角为60°,则塔高AB=_____ 米.
![](https://img.xkw.com/dksih/QBM/2016/3/23/1572554438860800/1572554444275712/STEM/5b3edeb52502427eb5c764c127625a37.png?resizew=141)
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2016-12-04更新
|
623次组卷
|
2卷引用:2015-2016学年广东省东莞市高二上学期期末文科数学A卷