Domain Definition Precalculus
X takes all real values numbers both positive and negative numbers.
Domain definition precalculus. To reiterate the domain of a function f x is the set of all values of x for which the function is also real valued. The range of f x is the set of all values of f corresponding to the domain of f. Another way to identify the domain and range of functions is by using graphs.
Remember that input values are almost always shown along the horizontal axis of the graph. Domain is a set of all real numbers for x the independent variable for which a function is defined. The range is the set of possible output values which are shown on the y axis.
For example the domain and range for the function y f x x 2 is. The domain of a function can be determined by listing the input values of a set of ordered pairs. Since domain refers to the set of possible input values the domain of a graph consists of all the input values shown on the graph.
Keep in mind that if the graph continues beyond. The domain of a function includes all real input values that would not cause us to attempt an undefined mathematical operation such as dividing by zero or taking the square root of a negative number. Find the domain and range of each function below.
Because the domain refers to the set of possible input values the domain of a graph consists of all the input values shown on the x axis. The domain of a function can be determined by listing the input values of a set of ordered pairs.