User Activity

  • Posted a comment on ticket #4365 on Maxima -- GPL CAS based on DOE-MACSYMA

    I don't understand why solveradcan:true returns implicit solutions. This isn't mentioned in the manual. Given the effect of solverradcan:true the effect of solveexplicit:true inhibiting implicit solutions is as documented, Maxima 5.47.0 https://maxima.sourceforge.io using Lisp CLISP 2.49+ (2010-07-17) Distributed under the GNU Public License. See the file COPYING. Dedicated to the memory of William Schelter. The function bug_report() provides bug reporting information. (%i1) display2d:false$ (%i2)...

  • Committed [39c0ff] on Code

    Update solution for ODE Murphy 1.34

  • Modified a comment on ticket #4325 on Maxima -- GPL CAS based on DOE-MACSYMA

    Fixed with commit [1be377]

  • Committed [d0b051] on Code

    Add assumptions for tests Kamke 2.3 and 2.4

  • Modified ticket #4325 on Maxima -- GPL CAS based on DOE-MACSYMA

    Maxima can't differentiate beta function

  • Posted a comment on ticket #4325 on Maxima -- GPL CAS based on DOE-MACSYMA

    Fixed with commit [1be3779a]

  • Committed [1be377] on Code

    Bug #4325: Maxima can't differentiate beta function

  • Posted a comment on ticket #4325 on Maxima -- GPL CAS based on DOE-MACSYMA

    The following works. I am not familiar with MQAPPLY and would welcome guidance on style. ;; Derivative of beta function ;; https://functions.wolfram.com/GammaBetaErf/Beta/ ;; https://en.wikipedia.org/wiki/Beta_function (defprop %beta ((a b) ; derivative wrt a ((mtimes) (($beta) a b) ((mplus) ((mqapply) (($psi array) 0) a) ((mtimes) -1 ((mqapply) (($psi array) 0) ((mplus) a b))))) ; derivative wrt b ((mtimes) (($beta) a b) ((mplus) ((mqapply) (($psi) 0) b) ((mtimes) -1 ((mqapply) (($psi array) 0)...

View All

Personal Data

Username:
billingd
Joined:
2001-11-02 02:46:29

Projects

This is a list of open source software projects that David Billinghurst is associated with:

Personal Tools