# Readers ask: What is domain and range?

## What is domain and range examples?

The domain is the set of x -coordinates, {0,1,2} , and the range is the set of y -coordinates, {7,8,9,10} . Note that the domain elements 1 and 2 are associated with more than one range elements, so this is not a function.

## How do you find the domain?

The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.

## How do you find the range?

The Range is the difference between the lowest and highest values. Example: In {4, 6, 9, 3, 7} the lowest value is 3, and the highest is 9. So the range is 9 − 3 = 6.

## What is the domain and range of 4?

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined. y=4 is a straight line perpendicular to the y-axis at point (0,4) , which means that the range is a set of one value {4} .

## How do you list domain and range?

Another way to identify the domain and range of functions is by using graphs. 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 range is the set of possible output values, which are shown on the y-axis.

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## What is the domain for a circle?

3 Answers By Expert Tutors. Your domain and range of a circle depends of the radius of that circle . Since a circle is a set of points equidistant from a fixed point, your domain and range will have the same intervals. As proof, draw the center of the circle at the origin (0,0).

## Is this domain name taken?

How do I check if a domain name is available ? There are a couple ways to see if a domain you want is available . First, simply type the URL into Name .com’s search—we’ll tell you if the domain can be registered or not. Or, search for the domain in Whois Lookup.

## How do I find the domain of a square root function?

Since the square root must always be positive or 0, . That means . The domain is all real numbers x where x ≥ −5, and the range is all real numbers f(x) such that f(x) ≥ −2.

## Is Range always positive?

No. Because the range formula subtracts the lowest number from the highest number, the range is always zero or a positive number.

## What is the range of a list of numbers?

The ” range” of a list a numbers is just the difference between the largest and smallest values.

## What is the range in math terms?

The range is the difference between the largest and smallest numbers. The midrange is the average of the largest and smallest number.

## How do you write a domain?

Answer Identify the input values. Since there is an even root, exclude any real numbers that result in a negative number in the radicand. Set the radicand greater than or equal to zero and solve for x. The solution(s) are the domain of the function. If possible, write the answer in interval form.