Question

How to know whether you have a vertical or horizontal asymptote?

Answer 1

 

hello : 
1 ) if : xـــــــ> ± ∞  
 limf(x)   = b     ....(b∈R)     so : y=b is the equation of the line horizontal asymptote.
2) if : xـــــــ> a ...(a∈R)
 limf(x)   = ± ∞  
so : x=a is the equation of the line vertical asymptote.