已知<β<α<π,sin(α+β)=,sin=,则cos=________.
函数y=loga(x-2)+1(a>0且a≠1)恒过定点______________.
loga<1,则a的取值范围是____________.
函数f(x)=log(a-1)x是减函数,则a的取值范围是____________.
函数y=+的定义域为___________;函数y=4(x+|x|)-1的定义域为___________.
已知>,则x的取值范围是_______________.