名校
解题方法
1 . 已知在
中,
,则
的面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6d01937632c76dd8af6350475cce5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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2016-12-03更新
|
562次组卷
|
3卷引用:2015届海南省嘉积中学高三下学期大测三理科数学试卷
2 . 已知x、y的取值如下表所示,若y与x线性相关,且
=0.95x+
,则
=____________ .
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490752512/STEM/4cfcd7605d074430a416443f8013a688.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490752512/STEM/00611aa52ac74f67b85c322b4d8fce91.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490752512/STEM/00611aa52ac74f67b85c322b4d8fce91.png?resizew=13)
x | 0 | 1 | 3 | 4 |
y | 2.2 | 4.3 | 4.8 | 6.7 |
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3 . 已知曲线f(x)=xsinx+1在点(
,
+1)处的切线与直线ax-y+1=0互相垂直,则a=________ .
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490793472/STEM/197c3c0b28d14ab3b8df8115faf9e9f2.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2015/9/23/1572239484821504/1572239490793472/STEM/197c3c0b28d14ab3b8df8115faf9e9f2.png?resizew=17)
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4 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74be0e395883f9cb867b4ab11e21080.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe329df702fbfee401bc965ce045a17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74be0e395883f9cb867b4ab11e21080.png)
您最近一年使用:0次
解题方法
5 . 若椭圆经过点
,且焦点为
,则这个椭圆的离心率等于______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76a22a630acddf055fec1b91b8f8f69.png)
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6 . 已知
是直线,
是平面,下列命题中:
①若
垂直于
内两条直线,则
;
②若
平行于
,则
内可有无数条直线与
平行;
③若
且
,则
;
④若
则
;
⑤若
且
,则
;
正确的命题序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f682870aa63eea67a9f3133b3dabac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2015/9/11/1572230302351360/1572230308323328/STEM/bbc526cd8e1b482db66c296898b38a64.png?resizew=9)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688bf824afd37a496a67208650e18f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dedfa42c16dd0aefa2928a6e41f3dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf367c280ecc9ad348bc3b7e2636ee5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc95f7f91cad8984463deaf4c96ae67.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688bf824afd37a496a67208650e18f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202af51f5ebe87ec0017f439a6ad7fbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc95f7f91cad8984463deaf4c96ae67.png)
正确的命题序号为
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7 . 给出下列说法,其中说法正确的序号是__________ .
① 小于
的角是第Ⅰ象限角;
②若
是第Ⅰ象限角,则
;
③ 若
,
,则
;
④ 若
,
,
、
是方程
的两个根,则
的最小值是
.
① 小于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6714cb03742e6c67e4d00b90e8f4c8a9.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59dd86c8f0dbcf7c15b16f13e66b782.png)
③ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f45462f454e0d7fb7f91ff13876a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1729154ba5df08891ef1ae94b4223525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
④ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19d6fa3789aed1a7750709cbcfabae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96101eb5dce02c0213ad008413f3066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37bd9178fccd7699dcf3c802c70199da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4e94463a0f22990789c5494916e844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
您最近一年使用:0次
8 . 如图为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c82011d35bd7e79e11bf2fc7333d6ed.png)
的图象的一段,其解析式___________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c82011d35bd7e79e11bf2fc7333d6ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e495408651140e9e8460e902682180.png)
![](https://img.xkw.com/dksih/QBM/2015/8/24/1572217541287936/1572217546989568/STEM/79c1322a327f4a37b6ca29813e75c2e4.png?resizew=191)
您最近一年使用:0次
9 . 给出下列说法:
①小于
的角是第Ⅰ象限角;②若
是第Ⅰ象限角,则
;
③若
,
,则
;
④若
,
,
、
是方程
的两个根,则
的最小值是
.
其中说法正确的序号是__________________ .(注:把你认为正确的命题的序号都填上)
①小于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6714cb03742e6c67e4d00b90e8f4c8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59dd86c8f0dbcf7c15b16f13e66b782.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f45462f454e0d7fb7f91ff13876a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1729154ba5df08891ef1ae94b4223525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2037b0bad7c7a312bac1ac0653d9a491.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19d6fa3789aed1a7750709cbcfabae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96101eb5dce02c0213ad008413f3066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37bd9178fccd7699dcf3c802c70199da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad4e94463a0f22990789c5494916e844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
其中说法正确的序号是
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10 .
中,
、
、
分别为角
、
、
的对边,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febfafa9a862668e1582b895120ca3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb6362bc99fba4bcd7331db9aee922c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
您最近一年使用:0次