To find out the domain and range of a function, you can follow these easy steps:

1. Domain:

   • The domain is all the possible input values, also known as x-values.
   • For example, in the function ( f(x) = \sqrt{x} ), the domain is ([0, \infty)).
   • This means you can only use numbers that are 0 or bigger because you can't find the square root of a negative number.

2. Range:

   • The range is all the possible output values, called y-values.
   • For the same function ( f(x) = \sqrt{x} ), the range is also ([0, \infty)).
   • This tells us that the function cannot give you a negative number as an output.

Knowing about domain and range helps you understand how a function works!