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#2380 integration, interactive prompt

open
nobody
5
2012-03-27
2012-03-22
Sergey Litvinov
No

Integration ignores my answer in interactive prompt and cannot compute integral.

(%i3) display2d: false;
(%i4) integrate(%e^(-A*x + x), x, 0, +inf);
Is A-1 positive, negative, or zero?

positive;
(%o4) 'integrate(%e^(x-x*A),x,0,inf)

It works in this way:
assume(A>1);
integrate(%e^(-A*x + x), x, 0, +inf);

version:
version 5.26.0_90_gdabb9d9, lisp clisp

Discussion

  • Robert Dodier
    Robert Dodier
    2012-03-27

    Confirmed -- I see the same behavior.

    Maxima version: 5.26.0
    Maxima build date: 9:15 3/27/2012
    Host type: i686-pc-linux-gnu
    Lisp implementation type: SBCL
    Lisp implementation version: 1.0.45.0.debian

     
  • Robert Dodier
    Robert Dodier
    2012-03-27

    • labels: --> Lisp Core - Integration