lim x->∞ ln(x-a)/ln(e^x-e^a) =???

[thanh loan]

help me solve lim x->∞ ln(x-a)/ln(e^x-e^a)
many thanks!

 

[Deleted member 4993]

help me solve lim x->∞ ln(x-a)/ln(e^x-e^a)
many thanks!

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