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Question: Partial Differentiation Not Working with Units

Question:Partial Differentiation Not Working with Units

etian2 45 Maple 2022
differentiation units
May 04 2022
2

Hi, with Units[Simple] package loaded, I tried to differentiate a few functions using D[n] but it does not work. problem.mw

a := proc (x, y) options operator, arrow; exp(x*y) end proc

proc (x, y) options operator, arrow; exp(y*x) end proc

 (1)

D[1](a)

proc (x, y) options operator, arrow; y*exp(y*x) end proc

 (2)

D[2](a)

proc (x, y) options operator, arrow; x*exp(y*x) end proc

 (3)

retart

retart

 (4)

"with(Units[Simple]):"

a := proc (x, y) options operator, arrow; exp(x*y) end proc

proc (x, y) options operator, arrow; Units:-Simple:-exp(Units:-Simple:-`*`(x, y)) end proc

 (5)

D[1](a)

Error, (in tools/gensym) too many levels of recursion

  

D[2](a)

Error, (in tools/gensym) too many levels of recursion

  

NULL

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