Program: 3D Grapher
Cylindrical a=20*cos(u)*sin(v)R=v*4*uZ=15*uMin U:-2 MaxU:2 Steps:100MinV:-2 MaxV:2 Steps:100
Cartesian
X=sin(u)*vY=u*vZ=u*cos(v)Min U:-3 Max U:3 Steps:30Min V:-3 Max V:3 Steps:30