lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)
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lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)原式=l
lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)
lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)
lim(x→1)(x^3-3x+2)/(x^3-x^2-x+1)
原式=lim(x→1)(x-1)(x-2)/[x^2(x-1)-(x-1)]=lim(x→1)(x-1)(x-2)/(x-1)^2(x+1)
=lim(x→1)(x-2)/(x-1)(x+1)=无穷大
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