Z axis eqn function asymmetry

Jeremy Corrin shared this question 2 years ago
Needs Answer

Can anyone explain what's happening here? I was trying to graph sine curves up the z axis without parametric equations and get a surface or sometimes nothing plotted. I'm assuming it has something to do with functions in relation to x,y. Or is it a result of the way Geogebra handles these expressions?

© 2023 International GeoGebra Institute