# How do I find the domain of #f(x)=5x^2+2x-1#?

##### 1 Answer

Apr 4, 2015

The domain is all real numbers.

Domain is the set of all possible x values for a function. The function

graph{5x^2+2x-1 [-10, 10, -5, 5]}

The function stretches infinitely in both x-directions and is uninterrupted. The y-values (range) are restricted to all values greater than