Lim(x→1) (x2-4x-5 )/(x2-1)求极值

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Lim(x→1)(x2-4x-5)/(x2-1)求极值Lim(x→1)(x2-4x-5)/(x2-1)求极值Lim(x→1)(x2-4x-5)/(x2-1)求极值Lim(x→1)(x2-4x-5)/(

Lim(x→1) (x2-4x-5 )/(x2-1)求极值
Lim(x→1) (x2-4x-5 )/(x2-1)求极值

Lim(x→1) (x2-4x-5 )/(x2-1)求极值
Lim(x→1) (x2-4x-5 )/(x2-1)
=lim (x+1)(x-5)/[(x+1)(x-1)]
=lim(x-5)/(x-1)
=∞