Question

How do you determine the limit of `1/(x-4)` as x approaches `4^-`?

Answer 1

`lim_(x->4^(-))(1/(x-4))=-oo`

Explanation:

`x->4^(-)` so `x-4<0`

`lim_(x->4^(-))(1/(x-4))=^((1/0^(-)))-oo`