Famous Range And Domain Ideas. The domain of a function is the complete set of possible values of the independent variable. Introduction to the domain and range of a function intervals and interval notation what is the domain of a function?

The other way to include negatives is to shift the function down. And knowing the values that can come out (such as always positive) can also help so we need to say all the values that can go into and come out ofa function. This is best done usingsets.