Domain And Range Of A Function Desmos

Using desmos the range seems to be 0 2 infty.

Domain and range of a function desmos. In this activity students practice finding the domain and range of piecewise functions. To limit the domain or range x or y values of a graph you can add the restriction to the end of your equation in curly brackets. From piecewise functions and implicit relations to including sliders within your restrictions desmos makes it easy to control what you see in the coordinate plane. How to restrict a graph s domain and range in desmos.

For example y 2x 1 x 3 would graph the line y 2x for x values between 1 and 3. To find the domain of a function just plug the x values into the quadratic formula to get the y output. And maybe you should see when its derivative becomes zero to figure out the lower bound of the range since from the definition of e x this function can t go below 0. The range is found in a similar fashion to the domain but instead of writing the interval as beginning at the smallest x value and ending at the largest x value we write it as starting at the smallest y value and ending at the largest y value.

In this activity students describe the domain and range of six relationships. The domain of a function is the collection of independent variables of x and the range is the collection of dependent variables of y. They begin with an informal exploration of domain and range using a graph and build up to representing the domain and range of piecewise functions using inequalities. First verbally and later algebraically later students use movable points to create three functions whose domain and range match specific criteria.

Note that the output of this function is always positive due to the square in the denominator so the range. The range is the set of all y values of the function. How to set domain restrictions and piecewise functions using the desmos calculator. To find the range of a function first find the x value and y value of the vertex using the formula x b 2a.