2015经济类联考数学冲刺模拟六
1.http://file.koolearn.com/2014/0219/20140219024941694.gif
的根是( )
A.
http://file.koolearn.com/2014/0219/20140219024941243.gif
或
http://file.koolearn.com/2014/0219/20140219024942967.gif
B.
http://file.koolearn.com/2014/0219/20140219024942382.gif
或
http://file.koolearn.com/2014/0219/20140219024942441.gif
C.
http://file.koolearn.com/2014/0219/20140219024943577.gif
或
http://file.koolearn.com/2014/0219/20140219024943533.gif
D.
http://file.koolearn.com/2014/0219/20140219024944606.gif
或
http://file.koolearn.com/2014/0219/20140219024944152.gif
E.以上结果都不正确
2.已知实数
http://file.koolearn.com/2014/0219/20140219024945682.gif
满足
http://file.koolearn.com/2014/0219/20140219024945486.gif
和
http://file.koolearn.com/2014/0219/20140219024945622.gif
，则
http://file.koolearn.com/2014/0219/20140219024946343.gif
( )
A.25 B.26 C.27 D.28 E.29
3.设
http://file.koolearn.com/2014/0219/20140219024946778.gif
，其中
http://file.koolearn.com/2014/0219/20140219024947736.gif
，则对于满足
http://file.koolearn.com/2014/0219/20140219024947756.gif
的
http://file.koolearn.com/2014/0219/20140219024947376.gif
值，
http://file.koolearn.com/2014/0219/20140219024948578.gif
的最小值是()
A.10 B.15 C.20 D.25 E.30
4.曲线
http://file.koolearn.com/2014/0219/20140219024948328.gif
所围成的图形的面积为( )
A.
http://file.koolearn.com/2014/0219/20140219024949568.gif
B.
http://file.koolearn.com/2014/0219/20140219024949910.gif
C.1 D.2 E.4
5.如果方程
http://file.koolearn.com/2014/0219/20140219024949971.gif
有一个负根，那么
http://file.koolearn.com/2014/0219/20140219024950607.gif
的取值范围是()
A.
http://file.koolearn.com/2014/0219/20140219024950514.gif
B.
http://file.koolearn.com/2014/0219/20140219024954347.gif
C.
http://file.koolearn.com/2014/0219/20140219024954827.gif
D.
http://file.koolearn.com/2014/0219/20140219024955195.gif
E. 以上结果都不正确
答案：1C 2D 3C 4E 5C
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