Problem statement What is the left hand and right hand limit of 1/x^2 -4 at its vertical asymptote? Revelant equations None Attempt at a solution It's vertical asymptote are 2 and -2. I have attached my work . I understand it however at the back of the book it says the left hand limit at 2 is negative infinity. That I don't understand as if you look at the graph I have drawn the left hand limit at 2 is going in a positive direction. Does anyone have any insight on this? Thank you!