# How do you find the asymptotes for f(x)=(1-2x)/sqrt(1+x^2) ?

Feb 2, 2016

You find the asymptotes by subbing a number into x, in order to find the value which is undefined.

#### Explanation:

$f \left(x\right)$ = (1-2x)/(sqrt(1+x^2)

$f \left(- 1\right)$ = (1-2(-1))/(sqrt(1+(-1)^2)

= Underfinded

$\therefore$ $- 1$ is the asymptotpe