What is the domain and range of #f(x)=abs(x)# written in interval notation?
The domain of a function is the set of all
The range of a function is all the values that the function can possibly output. If you say that your range is
The function you give,
Our range, however, is not so broad. All positive numbers stay positive. All negative numbers get turned into positive numbers. (Since this is what the absolute value operator does.) Thus, our function cannot output a negative number. So our range is