/usr/share/octave/packages/symbolic-2.2.4/@symfun/ is in octave-symbolic 2.2.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/symbolic-2.2.4/@symfun/argnames.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/diff.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/formula.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/int.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/ldivide.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/minus.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/mldivide.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/mpower.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/mrdivide.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/mtimes.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/numel.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/plus.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/power.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/priv_disp_name.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/private/
/usr/share/octave/packages/symbolic-2.2.4/@symfun/private/helper_symfun_binops.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/private/mystrsplit.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/rdivide.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/size.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/subsref.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/symfun.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/symvar.m
/usr/share/octave/packages/symbolic-2.2.4/@symfun/times.m