Domain And Range Of A Function Explanation

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Domain and range of a function explanation. The domain of y sin x is all values of x since there are no restrictions on the values for x. Find the domain and range of a function with a table of values. Domain and range are all the possible x values and y values of the function and can often be described easily by looking at a graph.

The domain of a function is the collection of independent variables of x and the range is the collection of dependent variables of y. A function maps elements of its domain to elements of its range. The example below shows two different ways that a function can be represented.

From the above graph you can see that the range for x 2 green and 4x 2 25 red graph is positive. Its range is a sub set of its codomain. Watch this video to find out answers.

How to make a table of values on the ti89. In this article we will learn what a domain and range of a function mean and how to calculate the two quantities. Before getting into the topic of domain and range let s briefly describe what a function is.

You can take a good guess at this point that it is the set of all positive real numbers based on looking at the graph. What is the range of a function. The domain of a function is all the possible input values for which the function is defined and the range is all possible output values.

If you are still confused you might consider posting your question on our message board or reading another website s lesson on domain and range to get another point of view. Make a table of values on your graphing calculator see. To find the domain of a function just plug the x values into the quadratic formula to get the y output.