定义在实数R上的函数y=f(x)是偶函数,当x≥0时,f(x)=-4x
2+8x-3.
(Ⅰ)求f(x)在R上的表达式;
(Ⅱ)求y=f(x)的最大值,并写出f(x)在R上的单调区间(不必证明).
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设函数y=f(x)满足:对任意x∈R都有f(x)>0,且f(x+y)=f(x)•f(y)(x,y∈R)
(1)求f(0)的值;
(2)求f(x)•f(-x)的值;
(3)判断函数g(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225233649338114/SYS201311012252336493381012_ST/0.png)
是否具有奇偶性,并证明你的结论.
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函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225233649338114/SYS201311012252336493381011_ST/0.png)
的单调递增区间是
.
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设a=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225233649338114/SYS201311012252336493381009_ST/0.png)
,b=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225233649338114/SYS201311012252336493381009_ST/1.png)
,c=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225233649338114/SYS201311012252336493381009_ST/2.png)
,x>1则a,b,c由小到大的排列
.
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设函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225233649338114/SYS201311012252336493381008_ST/0.png)
为奇函数,则实数a=
.
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