Casio fx-CG20AU Software User's Guide
![Casio fx-CG20AU Software Calculator manual cover](/images/YdCbWEJOofXINpzigOlwxbHI/thumbs/thumb175x175.webp)
To reset the Casio fx-CG20AU to its factory settings, press the 'MENU' button, select 'System', then choose 'Reset'. Follow the prompts to complete the reset process.
To update the software, download the latest version from the Casio website, connect your calculator to the computer using a USB cable, and follow the on-screen instructions to complete the update.
If the calculator screen freezes, try pressing the 'P' button on the back of the calculator using a thin pointed object to reset it. If the problem persists, perform a factory reset.
To enter a fraction, press the 'SHIFT' button followed by the 'a b/c' button. Enter the numerator, press the right arrow key, and then enter the denominator.
Yes, you can graph functions on the Casio fx-CG20AU by selecting the 'Graph' menu, entering your function, and pressing the 'EXE' button to display the graph.
To calculate standard deviation, enter the 'STAT' mode, input your data, and then select the 'CALC' menu. Choose '1-Var' and press 'EXE' to view the standard deviation.
To change the display contrast, press the 'SHIFT' button followed by the 'MENU' button. Navigate to 'System', then 'Contrast', and adjust using the arrow keys.
To solve equations, access the 'EQUA' mode, select the type of equation, enter the coefficients, and use the 'SOLVE' function to find the solutions.
Ensure the batteries are correctly inserted. If the problem persists, try resetting the calculator by pressing the 'P' button on the back or check for any possible button jams.
Enter the 'MAT' mode, define your matrices, and use the available matrix functions to perform calculations such as addition, multiplication, or finding determinants.