Difference between revisions of "CAS View"
From GeoGebra Manual
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==Basic input== | ==Basic input== | ||
| − | * Enter: evaluate input | + | * {{KeyCode|Enter}}: evaluate input |
| − | * Ctrl+Enter: check input but do no evaluate input, e.g. b+b stays b+b. Note that assignments are always evaluated, e.g. a := 5 | + | * {{KeyCode|Ctrl+Enter}}: check input but do no evaluate input, e.g. ''b + b'' stays ''b + b''. Note that assignments are always evaluated, e.g. a := 5 |
* In an empty row type | * In an empty row type | ||
| − | ** | + | ** {{KeyCode|Space}} bar for previous output |
| − | ** ) for previous output in parentheses | + | ** <code>)</code> for previous output in parentheses |
| − | ** = for previous input | + | ** <code>=</code> for previous input |
| − | * Suppress output with a semicolon at the end of your input, e.g. a := 5; | + | * Suppress output with a semicolon at the end of your input, e.g. <code>a := 5;</code> |
==Toolbar== | ==Toolbar== | ||
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===Assignments & Connection with GeoGebra=== | ===Assignments & Connection with GeoGebra=== | ||
| − | * Assignments use the := notation, e.g. b := 5, a(n) := 2n + 3 | + | * Assignments use the := notation, e.g. <code>b := 5</code>, <code>a(n) := 2n + 3</code> |
| − | * To free up a variable name again, use Delete[b] or b := | + | * To free up a variable name again, use <code>Delete[b]</code> or <code>b :=</code> |
| − | * Variables and functions are always shared between the CAS view and GeoGebra if possible. If you define b:=5 in the CAS view, then you can use b in all of GeoGebra. If you have a function f(x)=x^2 in GeoGebra, you can also use this function in the CAS view. | + | * Variables and functions are always shared between the CAS view and GeoGebra if possible. If you define <code>b:=5</code> in the CAS view, then you can use ''b'' in all of GeoGebra. If you have a function <code>f(x)=x^2</code> in GeoGebra, you can also use this function in the CAS view. |
===Row References=== | ===Row References=== | ||
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* Static row references insert text from another row, so your input is changed. | * Static row references insert text from another row, so your input is changed. | ||
| − | ** # inserts the previous output | + | ** <code>#</code> inserts the previous output |
| − | ** #5 inserts the output of row 5 | + | ** <code>#5</code> inserts the output of row 5 |
* Dynamic row references use text from another row, but don't change your input. | * Dynamic row references use text from another row, but don't change your input. | ||
| − | ** $ inserts the previous output | + | ** <code>$</code> inserts the previous output |
| − | ** $5 inserts the output of row 5 | + | ** <code>$5</code> inserts the output of row 5 |
==Equations== | ==Equations== | ||
| − | * Equations are written using the simple Equals sign, e.g. 3x + 5 = 7 | + | * Equations are written using the simple Equals sign, e.g. <code>3x + 5 = 7</code> |
| − | * You can perform arithmetic operations on equations, e.g. (3x + 5 = 7) - 5 subtracts 5 from both sides of the equation. This is useful for manual equation solving. | + | * You can perform arithmetic operations on equations, e.g. <code>(3x + 5 = 7) - 5</code> subtracts 5 from both sides of the equation. This is useful for manual equation solving. |
| − | * LeftSide[3x + 5 = 7] | + | * <code>LeftSide[3x + 5 = 7]</code> returns ''3 x + 5'' and <code>RightSide[3x + 5 = 7]</code> returns ''7'' |
==Commands and Tools== | ==Commands and Tools== | ||
For a complete list of commands and tools see [[CAS Commands]] and [[CAS tools]]. | For a complete list of commands and tools see [[CAS Commands]] and [[CAS tools]]. | ||
Revision as of 12:58, 20 August 2011
Basic input
- Enter: evaluate input
- Ctrl + Enter: check input but do no evaluate input, e.g. b + b stays b + b. Note that assignments are always evaluated, e.g. a := 5
- In an empty row type
- Space bar for previous output
)for previous output in parentheses=for previous input
- Suppress output with a semicolon at the end of your input, e.g.
a := 5;
Toolbar
- Clicking a button in the toolbar applies a command to the currently edited row
- You can select part of the input text to only apply the operation to this selected part
Variables
Assignments & Connection with GeoGebra
- Assignments use the := notation, e.g.
b := 5,a(n) := 2n + 3 - To free up a variable name again, use
Delete[b]orb := - Variables and functions are always shared between the CAS view and GeoGebra if possible. If you define
b:=5in the CAS view, then you can use b in all of GeoGebra. If you have a functionf(x)=x^2in GeoGebra, you can also use this function in the CAS view.
Row References
You can refer to other rows in the CAS view in two ways
- Static row references insert text from another row, so your input is changed.
#inserts the previous output#5inserts the output of row 5
- Dynamic row references use text from another row, but don't change your input.
$inserts the previous output$5inserts the output of row 5
Equations
- Equations are written using the simple Equals sign, e.g.
3x + 5 = 7 - You can perform arithmetic operations on equations, e.g.
(3x + 5 = 7) - 5subtracts 5 from both sides of the equation. This is useful for manual equation solving. LeftSide[3x + 5 = 7]returns 3 x + 5 andRightSide[3x + 5 = 7]returns 7
Commands and Tools
For a complete list of commands and tools see CAS Commands and CAS tools.
