You can via the input field (you turn the input field to the submenu show) in GeoGebra define the domain of a function. This is done using. Function[ <Function>, <Start x-Value>, <Final x-Værdi> ].

For fx a førstegradsfunktion

1. Sign inputfeltet fx

   Function[ 0.5x  3, 0 , 5 ]

2. That means, the function 0.5x 3 is drawn in the range [0 ; 5].
3. GeoGebra allows even feature a name and start f(x), if the name is not used.

The same can be done for example, a quadratic function

1. Sign inputfeltet fx

   Function[ -0.5x ^ 2  3 x, 0 , 5 ]

2. The function -0.5x ^ 2 3 x thus becomes the character in the range [0 ; 5].
3. GeoGebra allows even feature a name and continues g(x) etc., if f(x) used.

All functions can in this way be signed in a bounded interval.

Tip1. First, draw the function via the input field completely normal. Then use the Function[ <Function>, <Start x-Value>, <Final x-Værdi> ] in the range of, relevant. Delete or hide then the first full feature through the algebra.

Tip2. One can use “Intersect between 2 objekter” -button to find the intersection between the functions.

Tip3. If you need, that there's more than 2 decimal places in the equation for the function, as shown in the algebra. Dette kan ændres via instillinger–>rounding.