欢迎来到天天文库
浏览记录
ID:8448863
大小:188.50 KB
页数:4页
时间:2018-03-28
《省赣中高二数学(文科)期中试题参考答案》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、更多资源尽在赣榆信息网http://www.gyxxw.com江苏省赣榆高级中学2008—2009学年度第二学期期中考试高二数学试题(文科)参考答案一.填空题:1.(4)2.演绎3.4.15.6.-237.8.9.10.1111.直线12.13.14.25二.解答题:15.(本小题满分14分)解:(1)设由z+2i为实数知··················3分同理可算得·················6分所以·················7分(2)·················10分
2、而它在复平面上对应的点在第一象限,所以满足···············12分解得·················14分16.(本小题满分14分)解:(1)设则······················3分因为更多资源尽在赣榆信息网http://www.gyxxw.com所以所以所以····················································6分(2)当a≥1时,对称轴,此时················9分当a<1时,在上单调递减,此时····
3、··········12分综上可知··································14分17.(本小题满分15分)解:(1)设函数,将点代入得所以·····················5分(2)因为,所以≥0,即函数的定义域不关于原点对称,所以函数是非奇非偶函数。····················9分(3)函数在上单调递增,·····················12分图略·····················15分18.(本小题满分15分)解:┅┅更多资源尽
4、在赣榆信息网http://www.gyxxw.com······················6分将以上各式分别相加得:················9分整理得:·····················15分19.(本小题满分16分)解:(1)证明:任取,则,,,,即函数在内单调递增.……8分(2)[解法一],……11分当时,,的取值范围是.……16分[解法二]解方程,得,……11分,更多资源尽在赣榆信息网http://www.gyxxw.com解得.的取值范围是.……16分20.(本小题
5、满分16分)(1)证令x=y=0.则f(0)=f(0)+f(0)所以f(0)=0……………2分(2)令y=-x,则f(0)=f(-x)+f(x)即f(-x)=-f(x)故f(x)为奇函数;……………4分例如:;……………6分(3)a)任取x10f(x2-x1)=f(x2)+f(-x1)=f(x2)-f(x1)<0则该函数f(x2)0时,有两解;……………12分当a=0时,有一解;……………
6、14分当a<0时,无解;……………16分
此文档下载收益归作者所有