lim(x→3)X二次方-4X+3/9-X二次方 求极限带解题过程
问题描述:
lim(x→3)X二次方-4X+3/9-X二次方 求极限带解题过程
答
lim(x→3) (x-3)(x-1)/[-(x+3)(x-3)]
=lim(x→3) (x-1)/[-(x+3)]
=(3-1)/[-(3+3)]
=-1/3