A formula I am working on is getting nothing. I'm not sure where my problem is, I'm hoping someone can help, I would be grateful. Thanks in advance. Brian a=1; b=0.3; c=0.5; d=0.3; r=a+bcos(1.5(uv)); x=(rcos(uv))-d(1.5bsin(1.5(uv)cos(uv)-(a+bcos(1.5*(uv))sin(uv)); y=(rsin(uv))-d(1.5bsin(1.5(uv)sin(uv)+(a+bcos(1.5*(uv))cos(uv)); z=rsin(1.5*(uv))+(d1.5ccos(1.5(u*v));