名校
1 . 在△
中,角
的对边分别为
.
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd1fcfad659e95da18c38e5eb157b8.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/efbebc3df0e44aaf7c04feebcf5d70dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f9c88edac18a30697feb5a9956b70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f2f1eb2beb23690f56a68dc7da08cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd1fcfad659e95da18c38e5eb157b8.png)
您最近一年使用:0次
2016-12-04更新
|
491次组卷
|
5卷引用:2016届北京市石景山区高三上学期期末考试理科数学试卷
2 . 已知
,若存在
,满足
,则称
是
的
一个“友好”三角形.
(i)在满足下述条件的三角形中,存在“友好”三角形的是____ :(请写出符合要求的条件的序号)
①
;②
;
③
.
(ii)若
存在“友好”三角形,且
,则另外两个角的度数分别为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8b956b4db581234590571473bc875d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572519296892928/1572519302946816/STEM/9797de771e0b4a16abab08df008c5a8a.png?resizew=352)
(i)在满足下述条件的三角形中,存在“友好”三角形的是
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065c4af6e00f7ff51db26daebeba7cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5749df61883d30ad4f47bc0b6feeab6a.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1935c77746782a259226734048ebba3c.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbff18dd2c260ddde33db9498cf1fb1.png)
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名校
3 . 已知等比数列
的公比为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f9f75b0ab56e33c9ce7b83090f59d8.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc4d615cf2480a59ea61ce19893498d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f9f75b0ab56e33c9ce7b83090f59d8.png)
您最近一年使用:0次
2016-12-04更新
|
417次组卷
|
3卷引用:2016届北京市海淀区高三上学期期末考试理科数学试卷
名校
4 . 设等差数列
的前
项和为
,若
,则
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894aaec56149f880c7cf2bbc0f358d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa7d6f54914d49fa1ad30540a30b396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6557bf8a2c3e02469d9194f7f9851d99.png)
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2016-12-04更新
|
395次组卷
|
2卷引用:2016届北京市丰台区高三上学期期末联考理科数学试卷
5 . 若
的满足
则
的最小值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516d8e423283bf59a02ab39b8935f598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6dfad5c144afe8b9e18f998f3a0dd6.png)
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6 . 已知点
的坐标满足条件
点
为坐标原点,那么
的最大值等于_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e79ac6ed007ad203b3660292e1a76c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/849dc7a8283d7f28c87174ecb87fa00d.png)
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2016-12-04更新
|
183次组卷
|
2卷引用:2016届北京市东城区高三上学期期末考试文科数学试卷
7 . 在
中,
,
为线段
的中点,若
的长为定值
,则
面积的最大值为_______ (用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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8 . 在
中,若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e3fc39d2b508cc1cae769a5e7266c0.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45373166e0a004b3b4d910655d409b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e3fc39d2b508cc1cae769a5e7266c0.png)
您最近一年使用:0次
9 . 已知正数
,
满足约束条件
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572517709578240/1572517715288064/STEM/61fcd972b6c24055a3e44c26bc44e396.png?resizew=100)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5ab825442a907af7f3791d76522fcf3.png)
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10 . 在各项均为正数的等比数列
中,若
,则
的最小值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b621758c240c2ed2c9294c201e276796.png)
您最近一年使用:0次
2016-12-04更新
|
367次组卷
|
4卷引用:2016届北京市朝阳区高三上学期期末联考理科数学试卷