All numeric literals in EXTREMA are stored internally as double precision real numbers. Numeric valued variables are stored internally as double precision real numbers, but EXTREMA also allows string valued variables. The following table shows the variable types.
scalar | a single number |
vector | a one dimensional list of numbers |
matrix | a two dimensional array of numbers |
string | a character string |
string array | an array of character strings |
Except for some variables which are created automatically by various
commands, each variable is named by the user. Variable names are not
case sensitive, so variable X
is the same as variable x
Other than restrictions due to memory allocation on your computer, there is
Variable names
Scalar variables
Vector variables
Matrix variables
String variables
Making a vector