# What is the equation of the line tangent to # f(x)=ln(x^2+x)/(2x) # at # x=-1 #?

##### 1 Answer

Jun 23, 2017

The tangent at x = -1 doesn't exist.

#### Explanation:

Look at the function,

Here's the graph:

graph{ln(x^2+x)/(2x) [-14.24, 14.24, -7.12, 7.12]}

You can see that the function is undefined at the point