limx→-1(1+x^1/3)/(1+x^1/5)=?

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limx→-1(1+x^1/3)/(1+x^1/5)=?limx→-1(1+x^1/3)/(1+x^1/5)=?limx→-1(1+x^1/3)/(1+x^1/5)=?上下同时求导=limx→-1(1

limx→-1(1+x^1/3)/(1+x^1/5)=?
limx→-1(1+x^1/3)/(1+x^1/5)=?

limx→-1(1+x^1/3)/(1+x^1/5)=?
上下同时求导
=limx→-1(1/3*x^(-2/3))/(1/5*x^(-4/5))
=(1/3*1)/(1/5*1)
=5/3