1.若lim x趋向无穷 ((4x^2+1)/(x+1)-ax+b)=0,求a,b的值

问题描述:

1.若lim x趋向无穷 ((4x^2+1)/(x+1)-ax+b)=0,求a,b的值
2.已知函数f(x)=x^2-1,x≤1;2x^3+a,x>1.试确定常数a使得lim x趋向1 f(x)存在