How Do You Calculate Domain & Range On A Graphing Calculator?
The domain of a function is the set of all X values that are true for a specific function. The range is a set of all Y values that are true for a specific function. These two function characteristics are easy to calculate, however, special features available on most graphing calculators can help you observe and check the domain and range without any guesswork. Press the “Y=,” or “Function” button, on the graphing calculator. Use the variable button (“X,” “T,” “?” or “n”) and other necessary buttons to enter the function. View the graph of the function. Change the window parameters so that the graph fits in the window by changing the “Window” settings of the calculator. The standard window settings are Xmin = -10, Xmax = 10, Ymin = -10, Ymax = 10. Evaluate the domain and range, and make an educated guess by looking at the graph. If you are graphing X^2, you can observe that the domain includes all integers for X, because the graph is clearly continuous on both the positive and negative
