若limx~∞[ax^3+(b-1)x^2+2/x^2+1]=1,求a,b的值

若limx~∞[ax^3+(b-1)x^2+2/x^2+1]=1,求a,b的值 若limx→∞[(2x^2+3)/(x+1)-ax+b]=0,求a,b的值 若极限limx→∞【4x^2+3/x-1+ax+b】=0.求常数a b.求极限limx→∞(√若极限limx→∞【4x^2+3/x-1+ax+b】=0.求常数a b.求极限limx→∞(√n^2+n)-n 若limx→∞[（x²+1）/(x+1)-ax-b]=0,求a、b 若limx→3(x^2+ax+b)/(x-3)=1,求a,b的值 1、求limx→0[(tanx-x)]/x^2*tanx2、求limx→+∞（x^2*lnx）/（x+e^x）3、若limx→0（e^x-ax^2-bx-c）/x^2=0,求a,b,c的值 已知limx^2+ax+b/x-1=3(x趋向于1),求a, 1.设f(x)是三次函数,且limx→-1 f(x)/(x+1)=6,limx→-2 f(x)/(x-2)= -3/2,求limx→3 f(x)/(x-3)的值.2.已知limx→1 (ax^2+bx+1)/(x-1)=3,求limx→∞ ( b^n+a^(n-1) )/( a^n+b^(n-1) )需要全过程, limx->1 (x^3+ax^2+x+b)/(x^2-1)=3求a b的值. limx→+∞[3x-根号下（ax^2-x+1]=2,求a 已知limx→∞[(x^2+1)/(x+1)-(ax+b)]=0,求常数a,b的值 limx趋近于∞〔（x^2+1)/（x+1)-ax-b〕=0,求常数a,b 确定常数a,b,使limx→1(x²+ax+b)/sin(x²-1)=3 已知函数极限求参数设limx趋于1时X2+ax+b/x+1=3,求a,b. limx趋向无穷[(x^2+1)/(x+1)]-(ax+b)=1 求a,b limx趋近于+∞(5x-根号下(ax^2-bx+1)=1,求a,b limx→+∞[5x-根号下(ax^2+bx+1)]=2,求a和b limx→+∞[5x-根号下(ax^2+bx+1)]=0,求a和b