#2132 incorrect integration

closed
5
2011-01-21
2011-01-09
lan1967
No

integrate(1/(x-z),z,1,x-1);
Is "x-2" positive, negative, or zero? positive;
answer:
log(x-1)-log(-1)
Thank you for your attention

Discussion

  • Dan Gildea

    Dan Gildea - 2011-01-21
    • assigned_to: nobody --> dgildea
    • status: open --> closed
     
  • Dan Gildea

    Dan Gildea - 2011-01-21

    Fixed in limit.lisp rev 1.105

    use gensym when shifting limit variable by a constant
    to avoid carrying over assumptions about original variable

     

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