百度网友3995c5d922012-12-22TA获得超过7742个赞关注1.lim(x→∞)(3x^2-2)/(x^4+x^2-1)=lim(x→∞)(3/x^2-2/x^4)/(1+1/x^2-1/x^4)=(0-0)/(1+0-0)=02.lim(x→∞)(4x^4-2x^2-x)/(x^3-x^2+1)=lim(x→∞)(4x-2/x-1/x^2)/(1-1/x+1/x^3)=(∞-0-0)/(1-0+0)=∞