1,①a+b分之f(肆仿a)+f(b)>0说明:a>-b时,f(a)>-f(b)由于f(x)是奇函数,即f(a)>f(-b),所以f(x)是增函数雹此,所以f(a)>f(b)②-1<=3x<2x+1<=1解得,-1/3<=x<=02,①令x=2,则f[f(2)-4+2]=f(2)-4+2得f(1)=1;若f(0)=a,令裂肆纤x=0,则f[f(0)]=f(0),得f(a)=a