CAS View
The CAS View Toolbar
The CAS View Toolbar provides a range of CAS Tools that can be operated with your pointer. They allow you to evaluate input and perform calculations.
Note: Always enter your input before you select the desired CAS Tool. In this way, the tool can be applied directly to your input.
Note: Always enter your input before you select the desired CAS Tool. In this way, the tool can be applied directly to your input.Familiarize yourself with GeoGebra's CAS Tools
| 1. |  | Type f(x) := x ^ 2 - 4 into the CAS Input and select the Keep Input tool in order to define a quadratic polynomial.
|
| 2. |  | Type f(x) into the next row of the CAS View and select the Factor tool to find the factors of the function.
|
| 3. |  | Enter f(x) into the next row and select the Derivative tool to calculate the derivative of the function.
|
| 4. |  | Hint: You can display the graph of the derivative function by clicking on the Show / Hide icon next to its equation. |
reset your construction in order to try out more CAS Tools.
Try it yourself...
Selected CAS Tools you might want to try out as well
 | Evaluate Use the Evaluate tool in order to calculate and simplify the input in a symbolic way. |
 | Numeric Use the Numeric tool in order to calculate the input numerically and get the result in decimal notation. |
| | Keep Input Use the Keep Input tool in order to keep and check the input. Hint: This is very useful if you don’t want your input to be simplified automatically. |
 | Expand
Use the Expand tool in order to expand an expression
Example: Applying the Expand tool to the input 2*(a + b) results in the output 2a + 2b. |
 | Substitute Use the Substitute tool in order substitute numbers for variables in an expression. After applying the tool to an expression, a dialog window appears, allowing you to enter the values you want to substitute. |