<![CDATA[Surface command for vector-valued functions]]>
https://help.geogebra.org/topic/surface-command-for-vector-valued-functions
Tue, 18 Feb 2020 15:08:25 +0000Tue, 18 Feb 2020 09:18:31 +0000Zend_Feed<![CDATA[comand and functions are different concepts and objects ie: you can not to use unitvector() because it is a comand but you can use (u,v)/abs(u,v) ie: Surface((u, v, u + v + 1) / abs((u, v, u + v + 1)), u, -2, 2, v, -2, 2) because abs() is a function another example: you can not to use max(f,g), you can use (f+g+abs(f-g))/2 instead if you need other examples you can search help here ah! and a,0,0b,0,0 has no sense]]>
https://help.geogebra.org/topic/surface-command-for-vector-valued-functions#comment-275820
Tue, 18 Feb 2020 14:25:31 +0000<![CDATA[Thank you for your reply, I didn't know the distinction between functions and commands, now it works! As for the a,0,0,b,0,0 part, I only use these surfaces to encode functions, so I don't need a graphical representation of them.]]>
https://help.geogebra.org/topic/surface-command-for-vector-valued-functions#comment-275824
Tue, 18 Feb 2020 15:08:26 +0000