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Question: F:=VectorField(⟨y,-x,0⟩); Error, unknown operator

Question:F:=VectorField(⟨y,-x,0⟩); Error, unknown operator

AlleyCat 10 Maple
vectorcalculus
June 17 2020
1

Trying to use Curl tutorial when doing vector calculus

when I enter F:=VectorField(⟨y,-x,0⟩); it tells me unknown operator.

Regards

 

 

with(VectorCalculus);
SetCoordinates('cartesian'[x, y, z]);
                       cartesian[x, y, z]

F:=VectorField(⟨y,-x,0⟩);

Error, unknown operator
Typesetting:-mambiguous(FAssignVectorFieldApplyFunction(acirc

  Typesetting:-mambiguous(?, 

  Typesetting:-merror("unknown operator"))umlycommauminus0xcomma0

  acirc?copy))


 
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