How do I mark that some letter belongs in real numbers?

Lotta Raitaranta shared this question 2 years ago

I can get the character which shows the letter belongs to a group but how do i mark the group? It won't accept a simple R and I can't fins it from the keyboard either.

Files: GG.PNG

Comments (2)


I suposse you want the Curve(1 - 3t², t (3 - t²), t, -5, 5) or another values for t

the syntax a ∈ {1, 2, 3, 4, 8, 9} return true or false depending value of a


You cannot define which numbers GeoGebra is using for its internal calculations, unless for integers, positive or negative, which you can "create" separately using a Sequence( ) command.

So you don't need to specify that in your formulas.

If you want to specify that in a text, select the desired character in the Symbols list of the Text dialog window.

© 2020 International GeoGebra Institute