Question 270120: For the equation y=ln(x+2), could you state the equation of the line asymptotic to the graph (if any)? Thanks Answer by jsmallt9(3758) (Show Source):
For a function like this, where y equals some logarithm, then there will be a vertical asymptote at the "edge" of the domain.
So we will start by finding the domain of this function. The arguments of all logarithms, regardless of the base, must be positive. So the domain of this function are the values that make (x+2) positive. In other "words":
Solving this we find that
This is the domain of this function.
To find the vertical asymptote, just change this to an equation:
This is the equation of the vertical asymptote for y = ln(x+2).