From GeoGebra Manual
- 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;
- 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
Assignments & Connection with GeoGebra
- Assignments use the := notation, e.g.
b := 5,
a(n) := 2n + 3
- To free up a variable name again, use
- 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 function
f(x)=x^2in GeoGebra, you can also use this function in the CAS view.
The output will always be just the term AFTER the :=, e.g. if you type b:=5 the output will be 5.
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 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 and
RightSide[3x + 5 = 7]returns 7