简单分析一下,答案如图所示
=lim(x²-(x+1)(ax+b))/(x+1)=lim(x²-ax²-(a+b)x-b)/(x+1)由极限=1得x²系数(1-a)=0,x系数-(a+b)=1所以a=1,b=-2
a = 1, b = 0;如果式子中分母是(x+1), b = -1
1和2