你好函数y=(1/2)^x是单调减函数不等式(1/2)^(x^2+ax)<(1/2)^(2x+a-2)恒成立,则x^2+ax>2x+a-2x^2+(a-2)x>a-2x^2+(a-2)x+(a-2)^2/4>a-2+(a-2)^2/4[x+(a-2)/2]^2>(a-2)^2/4+a-2恒成立,则(a-2)^2/4+a-2<0(a-2)^2+4(a-2)<0a^2-4a+4+4a-8<0a^2-4<0(a+2)(a-2)<0-2<a<2