满分5 >
高中数学试题 >
已知tanα=-1,且α∈[0,π),那么α的值等于( ) A. B. C. D...
已知tanα=-1,且α∈[0,π),那么α的值等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736002_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736002_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736002_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736002_ST/3.png)
考点分析:
相关试题推荐
下列函数中,最小正周期为π的是( )
A.y=cos4
B.y=sin2
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736001_ST/0.png)
D.
查看答案
sin(-60°)的值等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736000_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736000_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287273661/SYS201311012250562872736000_ST/2.png)
D.
查看答案
已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287135934/SYS201311012250562871359021_ST/0.png)
,
(1)当a=1时,求
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287135934/SYS201311012250562871359021_ST/1.png)
的最小值;
(2)
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287135934/SYS201311012250562871359021_ST/2.png)
对x∈[1,4]恒成立,求实数a的取值范围.
查看答案
定义在R上的函数f(x)满足:f(x+y)=f(x)+f(y)对一切的实数x,y都成立,并且当x>0时f(x)>0.
(1)判断函数f(x)的奇偶性;
(2)记g(x)=f
2(x),求使g(3x-1)<g(2x-9)成立的x的取值范围.
查看答案
设函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225056287135934/SYS201311012250562871359019_ST/0.png)
,
(1)求证:函数f(x)是奇函数;
(2)试用函数的单调性的定义证明函数f(x)在区间(0,a]单调递减;
(3)试判断(不必证明)函数f(x)在定义域上的单调性.
查看答案