# How do you find the inverse of #f(x) = x^2 + x# and is it a function?

##### 1 Answer

May 16, 2018

inverse relation is

#### Explanation:

let

solve for x in terms of y using the quadratic formula:

use quadratic formula

sub in

Therefore the inverse relation is

Note that this is a relation and not a function because for each value of y, there are two values of x and functions cannot be multivalued