1.coordinates: cylindrical
a= 5*cos(u)*sin(v)
R= u*5*v
Z= 10*u
min u: -2; max u: 2; steps: 200
min v: -2; max v: 2; seps: 200
2.coordinates: cartesian
X= cos(u)*sin(v)
Y= v*u
Z= 5*u
min u= -3; max u= 2; steps:200
min v= -3; max v= 2; steps: 200
3d grapher
