已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是

已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是
已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是
已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是

已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是已知函数f(x)=x^2+4x(x大于等于0),4x-x^2(x小于0),若f(a-2)+f(a)>0,则a的取值范围是
a>√ 3-1 和 a