lim (x -> -1) (x^3-2*x-1)(x+1)/(x^4+4*x^2-5)
lim (x -> -1) (x^3-2*x-1)(x+1)/(x^4+4*x^2-5)= по правилу Лопиталя=
lim (x -> -1)(3х^2-2):(4x^3+8x)=(3*(-1)^2-2):(4*(-1)^3+8*(-1))=1/12
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lim (x -> -1) (x^3-2*x-1)(x+1)/(x^4+4*x^2-5)= по правилу Лопиталя=
lim (x -> -1)(3х^2-2):(4x^3+8x)=(3*(-1)^2-2):(4*(-1)^3+8*(-1))=1/12