lim_x->1 (x^3-3x^2+2)/(x^3-x^2-x+1)

问题描述:

lim_x->1 (x^3-3x^2+2)/(x^3-x^2-x+1)

lim_x->1 (x^3-3x^2+2)/(x^3-x^2-x+1)
=
lim_x->1 (x-1)(xx-2x-2)/((x-1)^2(x+1))
=
lim_x->1 (xx-2x-2)/((x-1)(x+1))
=
无穷