Surface

Opacity

Color
standard
z-axial
custom
Normal Vectors
positive
negative
none
Lighting
on
off

Axes

mark units on axes

xy unit grid
yz unit grid
xz unit grid

axes extend from -6 to +6

Domain

x samples
y samples
u samples
v samples

x min x max


y min y max


u min u max


v min v max

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$f(x,y) = $  $\mathbf{r}(u,v) = $ $\langle$ $\rangle$