高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024459660.jpg">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500102.jpg">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500918.jpg">
一、选择题:本大题共12小题,每小题5分,共60分.
题号 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
答案 |
C |
C |
D |
A |
B |
A |
B |
A |
C |
D |
B |
B |
二、填空题:本大题共4小题,每小题5分,共20分.
13.高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500741.png"> 14.高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500441.png"> 15.高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500701.png"> 16. 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500609.png">
三、解答题:本大题共6个题,共70分.
17.解: (Ⅰ)依题意得,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500392.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500626.png">,
解得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500435.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500379.png">. ……………6分
(Ⅱ)高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500726.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500469.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500408.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500337.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500713.png">……………10分
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500907.png">的分布列为
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500721.png"> | 1 | 2 | 3 | 4 | 5 |
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500186.png"> | 0.2 | 0.4 | 0.2 | 0.1 | 0.1 |
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500985.png">的数学期望为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024500650.png">.……………12分
18.解:(Ⅰ)由题意:高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501262.png">
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501194.png">即高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501913.png"> ……………3分
∵高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501758.png">
∴ 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501100.png">
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501941.png">即高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501520.png"> ……………6分
(Ⅱ)由(1)知:高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501285.png">
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501971.png">……………8分
∵高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501180.png">为锐角三角形.
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501288.png"> 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501889.png">
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501625.png"> 又高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501929.png">
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501330.png"> ∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501326.png"> ……………………10分
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501539.png"> ……………………………12分
19.解:(Ⅰ)证明:由题意高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501623.png">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501852.png">注意到高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501875.png">,所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501903.png">,
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501578.png">,所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501344.png">,………………3分
又高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501312.png">侧面高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501815.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501957.png"> 又高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501219.png">与高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501537.png">交于点高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024501144.png">,所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502205.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502188.png">又因为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502306.png">,所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502299.png">.……………6分
(Ⅱ) 解:如图,分别以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502101.png">所在的直线为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502965.png">轴,
以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502300.png">为原点,建立空间直角坐标系高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502943.png">
则高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502485.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502485.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502914.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502565.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502674.png">,
又因为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502804.png">,
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502190.png"> …………8分
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502604.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502135.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502417.png">
设平面高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502143.png">的法向量为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502659.png">,
则根据高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502269.png">可得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502918.png">是平面高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502562.png">的一个法向量,
设直线高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502748.png">与平面高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024502262.png">所成角为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503775.png">,则高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503564.png">高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503220.png">………………12分
20.解:(Ⅰ)高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503894.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503102.png">,∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503265.png"> ………1分
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503100.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503191.png"> ………3分
∴高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503472.png">的方程为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503300.png">. ………5分
(Ⅱ)联立高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503193.png">得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503437.png">,联立高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503500.png">得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503136.png">, ………7分
从而高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503822.png">,
点高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503886.png">到直线高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503951.png">的距离高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503388.png">,进而高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503560.png">………9分
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503756.png">令高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503479.png">,
有高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503164.png">, ………11分
当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503791.png">,时高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503796.png">,
即当过原点直线为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503208.png">时,△高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503451.png">面积取得最小值高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024503966.png">.………12分
21.解(Ⅰ)定义域为R,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504126.png"> ……………2分
当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504914.png">时, 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504715.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504289.png">;高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504689.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504280.png">
当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504409.png">时, 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504584.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504282.png">;高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504575.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504584.png"> ……………4分
所以当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504374.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504947.png">的增区间是高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504785.png">,减区间是高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504467.png">
当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504384.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504285.png">的减区间是高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504504.png">,增区间是高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504207.png"> ……………6分
(Ⅱ)高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504172.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504455.png">,由高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504495.png">得:高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504632.png">
设高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024504212.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505874.png">, ……………8分
所以当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505697.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505903.png">;当高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505671.png">时,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505805.png">,
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505355.png">在高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505637.png">上递增, 在高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505831.png">上递减, ……………10分
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505269.png">
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505352.png">的取值范围是高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505121.png"> ……………12分
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505858.png">22.解:(I)连接高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505532.png">,因为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505431.png">,所以 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505442.png">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505715.png">为半圆的切线 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505906.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505927.png"> 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505989.png">高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505853.png">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505712.png">平分高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505457.png">…………………………5分
(Ⅱ)连接高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505238.png">,
由高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505898.png">知高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505861.png">
所以高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505345.png">四点共圆
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505970.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505317.png">,
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505740.png"> ……………10分
23.解(Ⅰ)将高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505602.png"> 代入高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024505429.png"> ,得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024506615.png">的参数方程为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024506300.png">
∴曲线高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024506332.png">的普通方程为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024506286.png">. ………5分
(Ⅱ)设高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024506105.png">,高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024506588.png">,又高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507824.png">,且高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507837.png">中点为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507757.png">
所以有:高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507177.png">
又点高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507858.png">在曲线高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507615.png">上,
∴代入高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507610.png">的普通方程高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507289.png">得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507958.png">
∴动点高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507325.png">的轨迹方程为高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507196.png">. ………10分
24.(Ⅰ)由高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507886.png">得高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507315.png"> ……………5分
(Ⅱ)高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507950.png">
而高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507598.png">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507672.png"> ……………8分
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507188.png">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507496.png"> 高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507533.png">
高三上学期摸底测试数学(理)试题及答案 src="/static/wddqxz/img/default/default.png" data-src="https://oss.zyxzdq.com/dyfwdq/img/img.liexue.cn/uploadfile/2015/0828/20150828024507433.png"> …………………10分
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