<![CDATA[Help with help!]]>
https://help.geogebra.org/topic/help-with-help
Fri, 13 Jul 2018 20:58:42 +0000Fri, 13 Jul 2018 05:37:25 +0000Zend_Feed<![CDATA[I think that quadrics are automatically recognized, same as comics in 2D if you don't use a functional notation.]]>
https://help.geogebra.org/topic/help-with-help#comment-242798
Fri, 13 Jul 2018 20:56:32 +0000<![CDATA[Thank you for your reply Simona! To be specific, when I enter the following expressions into the input line I see 3 identical paraboloids around the z-axis, each classified as a Multivariable Funciton: b(x, z) = x² + z² c(x, y) = x² + y² d(y, z) = y² + z² This makes no sense to me. However, entering a: x = z² + y² yields an object classified as a Paraboloid about the x-axis. This was what led me to try to figure out what Geogebra means by "Multivariable Function".]]>
https://help.geogebra.org/topic/help-with-help#comment-242794
Fri, 13 Jul 2018 17:26:49 +0000<![CDATA[I guess that there is no page about Multivariable functions, because this term is too general :) Input is the same as for 2D functions, so you can basically use functional notation and assign a name to the function, or type in directly its expression, and GeoGebra automatically will name it for you. Commands related to 3D "things" are e.g. Surface(), that uses an intuitive syntax. If one knows how to parametrize (does this word exist? hope so) a function, they can use this command. Pressing F1 after selecting a tool or entering a command automatically opens a quick help or offers the possibility to open the related manual page, where you can read possible limitations on the use of a command in 3D. In fact some commands can currently be applied only on planes and quadrics, not on any 3D object. Anyway (sorry for being so long-winded) if in doubt, just ask ;)]]>
https://help.geogebra.org/topic/help-with-help#comment-242744
Fri, 13 Jul 2018 06:44:32 +0000<![CDATA[I'll ask the developers about multi variable functions, but I guess that you can use only f(x,y) as input.]]>
https://help.geogebra.org/topic/help-with-help#comment-242800
Fri, 13 Jul 2018 20:58:42 +0000