Тут и без лопиталя элеметарно: lim (x->1) x^3-1)/(x^2-1)=lim (x->1)x+1/(x+1)=1+1/(1+1)=3/2
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Тут и без лопиталя элеметарно: lim (x->1) x^3-1)/(x^2-1)=lim (x->1)x+1/(x+1)=1+1/(1+1)=3/2