 |
This is read-only version of the old wiki, feel free to browse it for materials. If you want to share your own materials, please use GeoGebraTube instead. You are also welcome to help us enhance the new wiki. If any questions arise, please contact the webmaster. |
Length Command
This command has three different meanings.
Length of vector
Returns length of the vector in standard (Euclidean) metric.
Syntax
Length[<Vector>] Length<[Point]>
The later is a shorthand for Length[Vector[<Point>]] or equivalently Length[Vector[<Point>],(0,0)].
Examples
Length[(1,1)] returns 1.41, since length of vector AB, where Failed to parse (Missing texvc executable; please see math/README to configure.): A=(0,0)
and Failed to parse (Missing texvc executable; please see math/README to configure.): B=(1,1) is Failed to parse (Missing texvc executable; please see math/README to configure.): sqrt(1^2+1^2)=1.41
.
Length of function or curve
Returns length of a fu Returns number of elements in a list.
Syntax
Length[<Function>, <Start x-Value>, <End x-Value> ] Length[<Function>, <Start Point>, <End Point> ] Length[<Curve>, <Start x-Value>, <End x-Value> ] Length[<Curve>, <Start Point>, <End Point> ]
Length of list
Returns number of elements of a list.
Syntax
Length[list]
Examples
Length[{}] returns 0, since {} is empty list
Length[{{}}] returns 1, since {{}} is list containing one element {}
