# Question: sorry i have three questions to ask in this book...

###### Question details

sorry i have three questions to ask in this book

it said that limit x--> inf iny =a^-2 implied limit x->inf y = e^(_a^2)

i think there is a proof to support such rule but it is not mensioned in the textbook

it seems reasonable to me but how can you actually prove it

(i cannot find a clear proof in the internet)

could you help me thank