The algebraic representations of all created objects (i.e. coordinates, equations) are listed in the [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img] [i]Algebra View [/i]in the order of their creation. [br][br]You can enter algebraic input or commands into the [i]Input Bar[/i] in [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img] [i]Algebra View[/i]. [br][br][img]https://wiki.geogebra.org/uploads/f/fd/Input_bar.PNG[/img][br]For entering algebraic expressions you can use the built-in[i] [img]https://wiki.geogebra.org/uploads/thumb/c/ce/Baseline-keyboard-24px.svg/24px-Baseline-keyboard-24px.svg.png[/img] Virtual Keyboard[/i], which contains four different layouts for[br][list][*]numbers[/*][*]the most used mathematical operators[/*][*]the letters of the Latin alphabet[/*][*]the letters of the Greek alphabet[/*][/list][b]Note:[/b] You can switch between the different layouts by selecting the corresponding keys in the top bar of the [i][img]https://wiki.geogebra.org/uploads/thumb/c/ce/Baseline-keyboard-24px.svg/24px-Baseline-keyboard-24px.svg.png[/img] [/i][i]Virtual Keyboard[/i]. You can close the [i][img]https://wiki.geogebra.org/uploads/thumb/c/ce/Baseline-keyboard-24px.svg/24px-Baseline-keyboard-24px.svg.png[/img] [/i][i]Virtual Keyboard[/i] at any time by clicking anywhere in the [i]Graphics View[/i]. If you're using the [i]Calculator Suite[/i] on a desktop PC you can also use your external keyboard.[br][br]The provided equation editor makes it very easy to enter complex mathematical expressions without losing track of what you are typing.[br][br]A built-in help for using commands can be found in every app. To get an overview of all commands in the online App, select the [img width=20,height=21]https://lh4.googleusercontent.com/XSCxIzmFtSnUPzUz7i5weAA8KeW88_thJM9x5PVUpUJ0zaQMdkTPxrBCrfQN8dIPiEtGAfatDpw-JiTTKmJIdBKwaYrU7tvjiBzucOtbSk1FVRL6Ma8nbSnSwIORS6X0iLEkV44K[/img][i]Input help[/i] button and choose [i]Help[/i]. On mobile devices select the [img width=20,height=20]https://lh5.googleusercontent.com/m4JJV-BBHdJBfdjRUsylYIuAaCroguwoVEWij8b4Y7X7OjDbyt-wRNegS8oERyKiujYH5_DaJikRPCfwmR-9Xkls8F0FsM8ibx6wiUkL0Bd4HnBOjYLWKi0JIDWLj7WblgWGdnuM[/img] [i]More [/i]button on the upper right corner of the [i][img]https://wiki.geogebra.org/uploads/thumb/c/ce/Baseline-keyboard-24px.svg/24px-Baseline-keyboard-24px.svg.png[/img] [/i][i]Virtual Keyboard.[/i][br]Using the online App, you can also just start typing a command. After three letters the app will suggest available commands including their parameters.[br][b]Note:[/b] Commands can also be entered in lower case and will be automatically changed to upper case after pressing enter.

[code][/code]Open the [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img][i] Algebra View [/i]and enter the function [math]f\left(x\right)=3\cdot sin\left(\frac{x}{2}+\sqrt{x}\right)[/math]into the [i]Input Bar[/i] using the [i][img]https://wiki.geogebra.org/uploads/thumb/c/ce/Baseline-keyboard-24px.svg/24px-Baseline-keyboard-24px.svg.png[/img] [/i][i]Virtual Keyboard[/i]. Then enter [math]\text{Roots(f)}[/math] into the [i]Input Bar[/i] as well.

[b]Edit existing objects[br][/b]Select an existing object in the [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img] [i]Algebra View [/i]to enable editing.[b][br][br]Input Help[br][/b]The [img width=20,height=21]https://lh4.googleusercontent.com/XSCxIzmFtSnUPzUz7i5weAA8KeW88_thJM9x5PVUpUJ0zaQMdkTPxrBCrfQN8dIPiEtGAfatDpw-JiTTKmJIdBKwaYrU7tvjiBzucOtbSk1FVRL6Ma8nbSnSwIORS6X0iLEkV44K[/img] [i]Input Help [/i]button left of the [i]Input Bar[/i] allows you to select the type of input and get help. You can select [img]https://wiki.geogebra.org/uploads/thumb/e/eb/Menu-help.svg/24px-Menu-help.svg.png[/img] [i]Help [/i]to open the [i]Input Help [/i]screen, where all commands and mathematical functions are listed.[br][b][br]Show / Hide objects[/b][br]Use the [img]https://wiki.geogebra.org/uploads/thumb/1/1f/Algebra_shown.svg/16px-Algebra_shown.svg.png[/img] [i]Visibility [/i]button left of an object in the [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img] [i]Algebra View[/i] to hide it in the [i]Graphics View[/i] (e.g. auxiliary objects). To show a hidden object again, click on the disabled [img]https://wiki.geogebra.org/uploads/thumb/3/34/Algebra_hidden.svg/16px-Algebra_hidden.svg.png[/img] [i]Visibility [/i]button in the [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img] [i]Algebra View[/i].[br][br][b]Delete objects[br][/b]You can delete any object by selecting the[img width=20,height=20]https://lh5.googleusercontent.com/m4JJV-BBHdJBfdjRUsylYIuAaCroguwoVEWij8b4Y7X7OjDbyt-wRNegS8oERyKiujYH5_DaJikRPCfwmR-9Xkls8F0FsM8ibx6wiUkL0Bd4HnBOjYLWKi0JIDWLj7WblgWGdnuM[/img][i]More [/i]button next to its algebraic representation in the [img]https://wiki.geogebra.org/uploads/thumb/3/36/Av_tab_white48.png/24px-Av_tab_white48.png[/img] [i]Algebra View [/i]and selecting [img]https://lh5.googleusercontent.com/WLkkTWqEgkM7J2cvenByhNht9sxmKPqwVZ8Vbr-Wek65AWqqGHkU6rdHqjhJs3lEFaLCF-TQhARoqZ7lPyQ-ZJoGjU4XBemSTcDoHEZJNAJfI2v-egAdlPvkmPNOOp-xo_KVGRLP[/img] [i]Delete[/i].