I would like to plot a function using vectors as in the tutorial (page 3) Tutorial

How to make vector like this x:=-pi,-pi+pi/20..pi? Comma i is my decimal sign so i guess i should use as argument separator ";".
When I write x:=-pi and press semicolon (comma i is my decimal sign) nothing happen...
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You should use the function range(2) or range(3). The same is obtained by choosing it from the Matrices palette.

Regards,
Radovan

Wrote

How to make vector like this x:=-pi,-pi pi/20..pi?

Just like Radovan has explained.