湖北省仙桃市沔州中学高考数学周卷（5）.doc

湖北省仙桃市沔州中学2014年高考数学周卷(5)一、选择题(每小题5分,共50分)???????????BAxxBRxxyyA?则,0log,,122()A.??1?xxB.??0?xxC.??1??xxD.??11???() x?(0, )x? ?? | |y x?0x??x R? x?x R?(0, )x? ??时,幂函数2 1( 1)my m m x? ?? ??为减函数,则实数m=()==?=2或m=? 52m??()????????( ) sin 1( )f x x x x R? ???,若( ) 2,f a?则( )f a?的值为().?1D.?( )y f x?的图象关于直线1x?和3x?对称,则( )f x的一个周期是()(x)=log3x,那么f(x+1)的图像是().( )1 (1 )f xx x?? ?的最大值是())(xf是定义在R上的奇函数,其最小正周期为3,且)0,23(??x时,??xxf??1log)(21,则??)2011()2010(ff()??( ) ( ) 1( 0)f x ax b c x a? ????是偶函数,其定义域为[ , ]a c b?,则有().A( ) ( )2af f b? ?.B( ) ( )2af f b? ?.C( ) ( )2af f b? ?.D以上都有可能二、填空题(每小题5分,共35分)∈-1,12,1,3时,幂函数y=∈R,不等式0m3x2x2????恒成立,:log (2 )ay ax? ?在[0,1]上是单调递减的,则函数2( ) 1f x x ax? ??在[0,1](万元)与产量x(台)之间的函数关系式是23000 20 , (0, 240).y x x x? ???若每台产品的售价为25万元,则生产者不亏本时(销售收入不小于总成本)( )f x的二次项系数为负,且对任意实数x,恒有( ) (4 )f x f x? ?,若2 2(1 3 ) (1 )f x f x x? ???,