Difference between revisions of "Tutorial:Basic Algebraic Input, Commands and Functions"
From GeoGebra Manual
(Created page with "==Tips and Tricks== * ''Name a new object'' by typing '''name =''' into the input bar in front of its algebraic representation. {{example|P = (3, 2) creates point P.}} * ''Multip...") |
|||
| Line 1: | Line 1: | ||
==Tips and Tricks== | ==Tips and Tricks== | ||
| − | * ''Name a new object'' by typing | + | * '''Name a new object''' by typing ''name ='' into the input bar in front of its algebraic representation. {{example|P = (3, 2) creates point P.}} |
| − | * ''Multiplication'' needs to be entered using an asterisk or space between the factors. {{example|a*x or a x}} | + | * '''Multiplication''' needs to be entered using an asterisk or space between the factors. {{example|a*x or a x}} |
| − | * ''GeoGebra is case sensitive!'' Thus, upper and lower case letters must not be mixed up. | + | * '''GeoGebra is case sensitive!''' Thus, upper and lower case letters must not be mixed up. |
**Points are always named with upper case letters {{example|A = (1, 2)}} | **Points are always named with upper case letters {{example|A = (1, 2)}} | ||
** Vectors are named with lower case letters {{example|v = (1, 3)}} | ** Vectors are named with lower case letters {{example|v = (1, 3)}} | ||
**Segments, lines, circles, functions… are always named with lower case letters. {{example|circle c: (x – 2)^2 + (y – 1)^2 = 16}} | **Segments, lines, circles, functions… are always named with lower case letters. {{example|circle c: (x – 2)^2 + (y – 1)^2 = 16}} | ||
** The variable x within a function and the variables x and y in the equation of a conic section always need to be lower case. {{example|f(x) = 3*x + 2}} | ** The variable x within a function and the variables x and y in the equation of a conic section always need to be lower case. {{example|f(x) = 3*x + 2}} | ||
| − | * If you want to use an ''object within an algebraic expression'' or command you need to create the object prior to using its name in the input bar. | + | * If you want to use an '''object within an algebraic expression''' or command you need to create the object prior to using its name in the input bar. |
| − | * Confirm an expression you entered into the input bar by pressing the | + | ** y = m x + b creates a line whose parameters are already existing values m and b (e.g. numbers / sliders). |
| − | Enter key. | + | ** Line[A, B] creates a line through existing points A and B. |
| − | * Open the help window for using the input bar and commands by | + | * '''Confirm an expression''' you entered into the input bar by pressing the {{KeyCode|Enter}} key. |
| − | selecting Help from the Menu | + | * '''Open the help window''' for using the input bar and commands by selecting ''Help'' from the [[Help Menu]] (or shortcut {{KeyCode|F1}}). |
| − | * Error messages: Always read the messages – they could possibly help to | + | * '''Error messages''': Always read the messages – they could possibly help to fix the problem! |
| − | fix the problem! | + | * '''Commands''' can be typed in or selected from the list next to the [[Input Bar]]. {{hint|If you don’t know which parameters are required within the brackets of a certain command, type in the full command name and press key {{KeyCode|F1}} to open the GeoGebra Wiki.}} |
| − | * Commands can be typed in or selected from the list next to the | + | * '''Automatic completion of commands''': After typing in the first two letters of a command into the [[Input Bar]], GeoGebra tries to complete the command. |
| − | + | ** If GeoGebra suggests the desired command, hit the {{KeyCode|Enter}} key in order to place the cursor within the brackets. | |
| − | + | ** If the suggested command is not the one you wanted to enter, just keep typing until the suggestion matches. | |
| − | of a certain command, type in the full command name and press key F1 to | ||
| − | open the GeoGebra Wiki. | ||
| − | * Automatic completion of commands: After typing in the first two letters | ||
| − | of a command into the | ||
| − | command. | ||
| − | ** If GeoGebra suggests the desired command, hit the Enter key in | ||
| − | order to place the cursor within the brackets. | ||
| − | ** If the suggested command is not the one you wanted to enter, just | ||
| − | keep typing until the suggestion matches. | ||
Revision as of 14:04, 3 March 2012
Tips and Tricks
- Name a new object by typing name = into the input bar in front of its algebraic representation. Example: {{{1}}}
- Multiplication needs to be entered using an asterisk or space between the factors. Example: a*x or a x
- GeoGebra is case sensitive! Thus, upper and lower case letters must not be mixed up.
- Points are always named with upper case letters Example: {{{1}}}
- Points are always named with upper case letters
- Vectors are named with lower case letters Example: {{{1}}}
- Vectors are named with lower case letters
- Segments, lines, circles, functions… are always named with lower case letters. Example: {{{1}}}
- Segments, lines, circles, functions… are always named with lower case letters.
- The variable x within a function and the variables x and y in the equation of a conic section always need to be lower case. Example: {{{1}}}
- The variable x within a function and the variables x and y in the equation of a conic section always need to be lower case.
- If you want to use an object within an algebraic expression or command you need to create the object prior to using its name in the input bar.
- y = m x + b creates a line whose parameters are already existing values m and b (e.g. numbers / sliders).
- Line[A, B] creates a line through existing points A and B.
- Confirm an expression you entered into the input bar by pressing the Enter key.
- Open the help window for using the input bar and commands by selecting Help from the Help Menu (or shortcut F1).
- Error messages: Always read the messages – they could possibly help to fix the problem!
- Commands can be typed in or selected from the list next to the Input Bar.
Hint: If you don’t know which parameters are required within the brackets of a certain command, type in the full command name and press key F1 to open the GeoGebra Wiki.
- Automatic completion of commands: After typing in the first two letters of a command into the Input Bar, GeoGebra tries to complete the command.
- If GeoGebra suggests the desired command, hit the Enter key in order to place the cursor within the brackets.
- If the suggested command is not the one you wanted to enter, just keep typing until the suggestion matches.
