CAS-delen
Fra GeoGebra Manual
Denne artikkelen handler om en del av Brukergrensesnitt i GeoGebra.
Hovedkomponenter
Oppsett
Menyer
Dialogbokser
{unchecked}
Noe av innholdet er ikke oversatt ennå. Gå til den engelske originalen eller til nynorskversjonen. Vennligst rediger manualen hvis du har rettigheter som oversetter. Denne siden handler om en funksjon som kun er støttet i GeoGebra 4.2 Beta.
Denne artikkelen handler om en del av Brukergrensesnitt i GeoGebra.Hovedkomponenter
Oppsett
Menyer
Dialogbokser
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:=5
in the CAS view, then you can use b in all of GeoGebra. If you have a functionf(x)=x^2
in GeoGebra, you can also use this function in the CAS view.
Merk:The output will always be just the expression after the:=
, e.g. if you typeb:=5
the output will be5
.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#5
inserts the output of row 5
- Dynamic row references use text from another row, but don't change your input.
$
inserts the previous output$5
inserts 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) - 5
subtracts 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.
Comments
Manual:CAS-delenes:Vista Algebraica CAS
Andre ressurser[rediger]
Lær å bruke CAS-verktøyet i GeoGebra 4.2 av Sigbjørn Hals