Question

So, CALCULUS 1 question, if i have:

Lim e^-1/(x+1) = 0
x->-1^+
Lim e^-1/(x+1) = infinite
x->-1^-

can i say this is an Vertical assimptote?

Answer 1

x->a, f(x)->infinity then it is a vertical asymp.
x->a+,f(x)->infinity then is is a vertical asymp.
x->a-,f(x)->infinity then it is a vetical asymp.

Answer 2

I know but, my problem is, even though -1+ is going to 0 I can say that its a vertical asymptote since -1- is going to infinite?