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#545 multivar taylor gives 1^2

None
duplicate
5
2022-04-15
2004-03-30
No

taylor(a^x+b^x,[a,b],0,1) =>

1^2*b^x + 1^2*a^x + ...

Note unsimplified 1^2

Of course, this is not a very useful expansion anyway,
since a^x is singular at a=0....

Discussion

  • Robert Dodier

    Robert Dodier - 2006-04-09
    • labels: --> Lisp Core - Taylor
     
  • Kris Katterjohn

    Kris Katterjohn - 2022-04-15
    • status: open --> duplicate
    • assigned_to: Kris Katterjohn
    • Group: --> None
     
  • Kris Katterjohn

    Kris Katterjohn - 2022-04-15

    I'm closing this report as a duplicate since it's the same as bug [#608]. Actually [#608] was the duplicate, but there are some comments and a patch over in that one.

    Since this is the same bug, the patch I posted in [#608] does fix the unsimplified factors of 1^2:

    (%i5) taylor(a^x+b^x,[a,b],0,1);
    (%o5) +(b^x+a^x)
    
     

    Related

    Bugs: #608


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