How Do You Find The Domain & The Range Of A Function?
The domain of a function is all the values of the control variable, or the x value, for which the function is defined. The range of a function is all the values of the dependent variable, or the y value, over the domain. So, in simpler terms, the domain of a function is all the values of x that result in a real value of y. And the range is all the real values of y that result from all the values in the domain. Start by looking at the equation that you need to find the domain and range of and recall any rules that might apply to that equation, such as those associated with fractions, exponents and other such functions. Ask yourself if the graph of the function that you are working with is constant. You may want to use a graphing calculator to get a better idea of what the graph of your function looks like. If the graph of the function that you are working with isn’t constant, then you know that its domain and range are not going to be constant either, meaning that the functions domain a
