povrs1
X(u,v,t)=u*(sin(v))^1
Y(u,v,t)=v*(sin(u))^1
Z(u,v,t)=v^1-u^1
min U=-2 max U=3 steps=120
min U=-2 max U=3 steps=120
3d graph
povrs2
X(u,v,t)=u*(sin(v))^1
Y(u,v,t)=v*(sin(u))^1
Z(u,v,t)=v^2-u^2
min U=-1 max U=3 steps=120
min V=-1 max V=3 steps=120
