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25.10.6  Parametric equation of an object in space

See Section 24.12.8 for parametric equations in two-dimensional geometry.

The parameq command finds parameterizations for geometric objects.

Examples

parameq(line(point(0,1,0),point(1,2,3)))
     

t,t+1,3 t
          
parameq(sphere(point(0,1,0),2))
     

cosu cosv,1+2 cosu sinv,2 sinu
          
normal(parameq(ellipse(point(-1,1,1),point(1,1,1),point(0,1,2))))
     


2
 cost,1,sint+1

          

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